Shiba Inu vs Shikoku dog vs Kai Ken Comparison - Dog breed selector: Japanese Shiba Inu or Japanese Wolfdog or Tiger Dog? Find the right dog for you

"Find similarities and differences between Shiba Inu vs Shikoku dog vs Kai Ken" Compare Shiba Inu and Shikoku dog. Which is better: Shiba Inu or Shikoku dog or Kai Ken?

Size and Weight Price and Availability Trainability and Intelligence Personality and Temperament Activity and Playfulness Adaptability and Independence Bite Characteristics Health and Lifespan Energy and Activity Diet and Weight Management Allergies and Grooming Good With As a Working Dog Reproducibility Recognition Show differences only

Name	Shiba Inu	Shikoku dog	Kai Ken
Origins	Japan	Japan	Japan
All Dog Breeds By Country Of Origin
Group	Companion Dogs	Companion Dogs	Hunting Dogs
Popularity Rank	45	210	494
Reviews	9	0	0
User Ratings

Common Names & Aliases Compare alternative names and nicknames used for Shiba Inu, Shikoku dog, and Kai Ken breeds.	Japanese Shiba Inu Japanese Small-Size Dog Shiba Shiba Ken Brushwood Dog	Japanese Wolfdog Kochi-ken Mikawa Inu Shikoku dog	Tiger Dog Tora Inu
Breed Classification How do breed classifications differ between Shiba Inu, Shikoku dog, and Kai Ken? Compare their breeding categories.	Purebred	Purebred	Purebred

Shiba Inu vs Shikoku dog vs Kai Ken Size and Weight Comparison

Size Classification Compare size differences between Shiba Inu, Shikoku dog, and Kai Ken. Which breed is the largest?	Medium	Large Medium	Medium
Weight Statistics How do weights compare between Shiba Inu, Shikoku dog, and Kai Ken? Compare adult weight ranges.	Male: 18-25 pounds (8-11 kg), Female: 15-20 pounds (6.8-9 kg)	Male: 35-50 pounds (16-23 kg), Female: 30-45 pounds (14-20 kg)	Male: 44-53 pounds (20–24 kg), Female: 35-44 pounds (16-20 kg)
Average Weight Which dog has a smaller / higher average weight?	Male: 21.5 pounds (9.5 kg), Female: 17.5 pounds (6.8.5 kg)	Male: 42.5 pounds (19.5 kg), Female: 37.5 pounds (17 kg)	Male: 48.5 pounds (22 kg), Female: 42 pounds (19 kg)
Height Which is taller, Shiba Inu or Shikoku dog or Kai Ken? Shiba Inu vs Shikoku dog vs Kai Ken height comparison:	Male: 14-16 inches (36-41 cm), Female: 13-15 inches (33-38 cm)	Male: 18-20 inches (46-51 cm), Female: 17-19 inches (43-48 cm)	Male: 20-22 inches (51-56 cm), Female: 18-20 inches (46-51 cm)
Average Height Which dog has a smaller / higher average height?	Male: 15 inches (38.5 cm), Female: 14 inches (35.5 cm)	Male: 19 inches (48.5 cm), Female: 18 inches (45.5 cm)	Male: 21 inches (53.5 cm), Female: 18.5 inches (47.5 cm)

Shiba Inu vs Shikoku dog vs Kai Ken Price and Availability Comparison

Price Range Compare puppy costs for Shiba Inu, Shikoku dog, and Kai Ken. Find price differences between these breeds.	$800-$1000	$500-$800	$1400-$1600
Availability Which is easier to get, Shiba Inu or Shikoku dog or Kai Ken?	Very frequent: The Shiba Inu is quite easy to get.	Average: The Shikoku dog is a commonly available dog breed.	Rare: You may rarely see each other in everyday life, but you might catch a glimpse of each other at dog shows.

Shiba Inu vs Shikoku dog vs Kai Ken Trainability and Intelligence Comparison

Intelligence Rating Compare intelligence levels between Shiba Inu, Shikoku dog, and Kai Ken. Which breed ranks highest?	Average: It takes patience to teach this breed any tricks or commands, but the effort is worth it. See more.	Average: It takes patience to teach this breed any tricks or commands, but the effort is worth it. See more.	Very smart: Kai Ken is an excellent dog breed. See more.
Smartest Dog Breeds
Training Difficulty Compare training difficulty levels between Shiba Inu, Shikoku dog, and Kai Ken. Which is easiest to train?	A slightly harder to train than average. See more.	Shikoku dog dogs are quite easy to train. See more.	Kai Ken dogs are very easy to train. See more.
Least Obedient Dog Breeds		Dog Breeds That Easy To Train
Watchdog Rating Compare watchdog abilities of Shiba Inu, Shikoku dog, and Kai Ken. Which breed is most alert?	Shiba Inu dogs are good watchdogs. See more.	Shikoku dog dogs are average watchdogs. See more.	Kai Ken dogs are one of the best watchdogs. See more.
Territorial Protection Compare territorial instincts between Shiba Inu, Shikoku dog, and Kai Ken. Which breed is most protective?	Shiba Inu dogs are extremely protective guard dogs. See more.	Shikoku dog dogs strongly protect their territory. See more.	Kai Ken dogs strongly protect their territory. See more.
Guard Dog Breeds List

Shiba Inu vs Shikoku dog vs Kai Ken Personality and Temperament Comparison

Personality Traits How do personalities differ between Shiba Inu, Shikoku dog, and Kai Ken? Compare temperaments.	Alert Confident Going Fearless Keen Faithful Charming	Agile Energetic Intelligent Loyal Brave Cautious	Agile Alert Intelligent Loyal Brave Reserved
Sensitivity Level Which dog is more sensitive? What's the difference?	Shiba Inu dogs have an average emotional level and are not the most sensitive dog breed. See more.	They are a little bit more sensitive than other dog breeds. See more.	Sensitive: Kai Ken dogs don't like an irregular daily routine, noisy household, and frequent guest visits. See more.
Most Sensitive Dog Breeds		Less Sensitive Dog Breeds
Affection Level Which is the more affectionate dog breed: Shiba Inu vs Shikoku dog vs Kai Ken?	Average to High: Shiba Inu dogs are highly affectionate dogs. See more.	High: Shikoku dog dogs are genuinely loyal, soft and gentle, loving, and affectionate dogs toward their handlers. See more.	High: Kai Ken dogs are genuinely loyal, soft and gentle, loving, and affectionate dogs toward their handlers. See more.
Most Affectionate Dog Breeds
Social Needs Shiba Inu vs Shikoku dog vs Kai Ken social needs comparison:	Shiba Inu dogs need for social interaction is average. See more.	Shikoku dog dogs are a social breed. See more.	Kai Ken dogs are a social breed. See more.
Impulse to Wander or Roam Which dog has a greater roaming instinct?	The wanderlust potential of the Shiba Inu is strong enough to escape from home. See more.	Shikoku dog dogs have average wanderlust potential. See more.	The wanderlust potential of the Kai Ken is strong enough to escape from home. See more.
Prey Drive Which dog has a higher prey drive? Which can be better for hunting?	Shiba Inu dogs have an average prey drive, which means that they don't have a high impulse to chase and catch something like a cat or any other small aminals, but it might happen. See more.	Shikoku dog dogs have an average prey drive, which means that they don't have a high impulse to chase and catch something like a cat or any other small aminals, but it might happen. See more.	Kai Ken dogs have a high impulse to chase and catch something. See more.
Dog Breeds With Low Prey Drive		Dog Breeds With High Prey Drive

Shiba Inu vs Shikoku dog vs Kai Ken Activity and Playfulness Comparison

Barking Frequency Compare barking frequencies of Shiba Inu, Shikoku dog, and Kai Ken. Which breed is most vocal?	Low to Average: The Shiba Inu rarely barks. See more.	Low to Average: The Shikoku dog rarely barks. See more.	Average to High: The Kai Ken is a vocal breed. See more.
Quiet Dog Breeds That Don't Bark		Dog Breeds That Bark The Most
Playful Nature Compare playfulness levels between Shiba Inu, Shikoku dog, and Kai Ken. Which breed is most playful?	Average: Shiba Inus, like any other dog breed, like playing. See more.	Average: Shikoku dogs, like any other dog breed, like playing. See more.	The Kai Ken is a highly playful breed. See more.
Most Playful Dog Breeds
Apartment Adaptability Compare apartment suitability of Shiba Inu, Shikoku dog, and Kai Ken. Which adapts best to small spaces?	Very house-friendly dog the Shiba Inu breed.	It is not the best choice if you want to keep them indoors, however, with careful exercise and several walks a day, they will tolerate the indoor environment, so it is possible to keep Shikoku dog indoors.	It is not the best choice if you want to keep them indoors, however, with careful exercise and several walks a day, they will tolerate the indoor environment, so it is possible to keep Kai Ken indoors.
The Worst Dog Breeds for Apartment Living		Apartment Friendly Dogs List

Shiba Inu vs Shikoku dog vs Kai Ken Adaptability and Independence Comparison

Lifestyle Adaptability Compare adaptability between Shiba Inu, Shikoku dog, and Kai Ken. Which breed is most flexible?	Shiba Inu dogs adapt well to lifestyle changes and different living environments.	Average: Shikoku dog dogs adapt to lifestyle changes and different living environments quite okay usually.	Kai Ken dogs adapt well to lifestyle changes and different living environments.
Alone Time Tolerance Which dog can be left alone: Shiba Inu or Shikoku dog or Kai Ken?	Just like every puppy, they are prone to panic, cry, bark, whine when they left alone by their owner.	Shikoku dog dogs do best when a family member is at home during the day or if their workplace is dog-friendly so they can take the dog at work.	Kai Ken dogs do best when a family member is at home during the day or if their workplace is dog-friendly so they can take the dog at work.

Shiba Inu vs Shikoku dog vs Kai Ken Bite Characteristics Comparison

Bite Risk Assessment Compare biting potential between Shiba Inu, Shikoku dog, and Kai Ken. Which has lowest bite risk?	Low 🔽 The Shiba Inu has a low chance of biting somebody.	Low 🔽 The Shikoku dog has a low chance of biting somebody.	Low 🔽 The Kai Ken has a low chance of biting somebody.
Mouthing Tendency Compare mouthing tendencies between Shiba Inu, Shikoku dog, and Kai Ken. Which uses mouth most during play?	Shiba Inu dogs have a higher than average tendency to nip, chew, playbite, or herd people. See more.	Shikoku dog dogs have an average tendency to nip, chew, playbite, or herd people. See more.	Kai Ken dogs have a higher than average tendency to nip, chew, playbite, or herd people. See more.
Bite Strength Rating Compare bite forces between Shiba Inu, Shikoku dog, and Kai Ken. Which has the strongest bite?	Between 200 and 400 PSI ⏺ Shiba Inu bite force: Ordinary.	Between 200 and 400 PSI ⏺ Shikoku dog bite force: Ordinary.	Between 200 and 400 PSI ⏺ Kai Ken bite force: Ordinary.
Dog Breeds With The Lowest Bite Force		Dog Breeds With the Strongest Bite Force

Shiba Inu vs Shikoku dog vs Kai Ken Health and Lifespan Comparison

Average Lifespan Compare life expectancies of Shiba Inu, Shikoku dog, and Kai Ken. Which breed lives longest?	11-15 years The average lifespan of Shiba Inu: 13 years	10-12 years The average lifespan of Shikoku dog: 11 years	12-16 years The average lifespan of Kai Ken: 14 years
Calculate dog years to human years by breed here
Climate Tolerance Compare weather adaptability between Shiba Inu, Shikoku dog, and Kai Ken. Which handles climate changes best?	Prefers average to cold weather conditions The Shiba Inu can adapt to well to cold weather conditions, some dogs even can be a good mountain dog. See more.	Tolerates warm and cold weather Dogs that tolerate hot and cold weather are typically those that have a double coat of fur. See more.	Prefers average to cold weather conditions The Kai Ken can adapt to well to cold weather conditions, some dogs even can be a good mountain dog. See more.
Health Concerns Compare health problems common in Shiba Inu, Shikoku dog, and Kai Ken. Which has fewer health issues?	The Shiba Inu is a healthy breed, but there are certain health issues that you should check with your vet regularly.	Shikoku dogs tend to have more frequent health issues than other breeds.	Kai Kens are commonly healthy dogs.
Healthiest Dog Breeds
Vet Care Frequency Which one may need more or less veterinary visits?	Average The Shiba Inu should have a complete physical check-up at least once per year.	Frequent The Shikoku dog should have a complete physical check-up at least once (but preferably twice) per year.	Rare The Kai Ken should have a complete physical check-up at least every 12-18 months (but preferably once per year).
Longest Living Dog Breeds
Health Problems Which one has more or less genetic/health problems: Shiba Inu vs Shikoku dog vs Kai Ken? What are the allergies, genetic diseases and concerns for them? Shiba Inu vs Shikoku dog vs Kai Ken health problems comparison:	Hip Dysplasia Patellar Luxation Allergies Cancer Hypothyroidism Progressive retinal atrophy (PRA) Epilepsy Glaucoma Spinning Chylothorax	No data available	No data available

Shiba Inu vs Shikoku dog vs Kai Ken Energy and Activity Comparison

Energy Rating Compare energy levels between Shiba Inu, Shikoku dog, and Kai Ken. Which breed is most active?	Shiba Inu dogs have a higher energy level than other dog breeds.	Shikoku dog dogs have an average energy level, so if you live a semi-active life, this breed can be a good choice for you.	Kai Ken dogs have an average energy level, so if you live a semi-active life, this breed can be a good choice for you.
Low-Energy Dog Breeds		High-Energy Dog Breeds
Activity Requirement / Exercise Need Shiba Inu vs Shikoku dog vs Kai Ken exercise need comparison. Which dog needs more activity? Which dog needs the most exercise: Shiba Inu or Shikoku dog or Kai Ken? Which dog needs the most walking? Which dog is the laziest?	Shiba Inu dogs have an average exercise need.	Shikoku dog dogs have an average exercise need.	Kai Ken dogs have an average exercise need.
Sleeping Need Which one sleeps the least/most: Shiba Inu or Shikoku dog or Kai Ken?	Shiba Inu dogs are quite energetic dogs and they don't spend too much time with sleeping.	Shikoku dog dogs sleep 12-14 hours a day as an average dog and they're not considered a lazy breed.	Kai Ken dogs sleep 12-14 hours a day as an average dog and they're not considered a lazy breed.
Dog Breeds That Sleep A Lot

Shiba Inu vs Shikoku dog vs Kai Ken Diet and Weight Management Comparison

Obesity Tendency Compare weight gain tendencies between Shiba Inu, Shikoku dog, and Kai Ken. Which is most prone to obesity?	Low to Average: The Shiba Inu has a low to the average risk for obesity. See more.	Average: The Shikoku dog has an average risk for obesity. See more.	Average: The Kai Ken has an average risk for obesity. See more.
Dog Breeds Prone To Obesity
Food Consumption Compare food requirements between Shiba Inu, Shikoku dog, and Kai Ken. Which needs most food?	Recommended daily amount: 1/2 to 1.5 cups of high-quality dry food a day, divided into two meals.	1.5 to 2.5 cups of high-quality dry food a day, divided into two meals.	1.5 to 2.5 cups of high-quality dry food a day, divided into two meals.
Dog Breeds That Eat A Lot

Shiba Inu vs Shikoku dog vs Kai Ken Allergies and Grooming Comparison

Allergy Friendliness Compare hypoallergenic qualities of Shiba Inu, Shikoku dog, and Kai Ken. Which is best for allergy sufferers?	No See more.	No See more.	No See more.
Hypoallergenic Dog Breeds
Coat Colors Compare color variations between Shiba Inu, Shikoku dog, and Kai Ken. What colors are available?	Black Tan Red Cream Sesame	Black Cream Black & Tan	Black Red Brindle Black & Red
Grooming Requirements Compare grooming needs between Shiba Inu, Shikoku dog, and Kai Ken. Which requires most maintenance?	Easy to groom: The Shiba Inu doesn't require a lot of grooming. See more.	Easy to groom: The Shikoku dog doesn't require a lot of grooming. See more.	Easy to groom: The Kai Ken doesn't require a lot of grooming. See more.
Low-Maintenance Dog Breeds		High-Maintenance Dog Breeds
Drooling Tendency Compare drooling tendencies between Shiba Inu, Shikoku dog, and Kai Ken. Which drools least?	The Shiba Inu is a perfect example of a very low drooling tendency. See more.	The Shikoku dog drools quite a lot, so if you dislike being covered by slobber spots on your clothes, you may want to choose another dog breed. See more.	The Kai Ken drools quite a lot, so if you dislike being covered by slobber spots on your clothes, you may want to choose another dog breed. See more.
Stinkiness Rating Compare odor levels between Shiba Inu, Shikoku dog, and Kai Ken. Which has least natural smell?	Medium ⏺ The Shiba Inu has an average chance of bad smell.	Medium ⏺ The Shikoku dog has an average chance of bad smell.	Medium ⏺ The Kai Ken has an average chance of bad smell.
Coat Characteristics Compare coat types between Shiba Inu, Shikoku dog, and Kai Ken. How do their fur characteristics differ?	Dense	Soft	Dense Soft Thick Double
Bathing Needs Compare bathing needs between Shiba Inu, Shikoku dog, and Kai Ken. Which requires most frequent baths?	4-6 weeks Average. Experts recommended at least every 4-6 weeks for this family pup. See more.	3-4 weeks More often than average. These dog coats tend to be longer, softer, and oilier than short-haired breeds. See more.	3-4 weeks More often than average. These dog coats tend to be longer, softer, and oilier than short-haired breeds. See more.
Shedding Level Who sheds more Shiba Inu or Shikoku dog or Kai Ken? Shiba Inu or Shikoku dog or {name3 shedding:	Shiba Inu dogs shed above average. See more.	Shikoku dog dogs shed moderately. See more.	Kai Ken dogs shed moderately. See more.
Low-Shedding Dog Breeds		Dog Breeds That Shed The Most

Shiba Inu vs Shikoku dog vs Kai Ken Good With Comparison

Child Compatibility Compare child-friendliness between Shiba Inu, Shikoku dog, and Kai Ken. Which is best with kids?	Shiba Inu dogs are average friendly dogs towards children.	Shikoku dog dogs are average friendly dogs towards children.	Kai Ken dogs are very kid-friendly dogs.
Kid-Friendly Dog Breeds
Pet Compatibility Which dog breeds get along well with other animals/pets?	Shiba Inu dogs usually don’t get on well with other pets.	Shikoku dog dogs are generally with other pets.	Kai Ken dogs are usually friendly towards other pets.
Stranger Friendly Which dog is more stranger friendly Shiba Inu or Shikoku dog or Kai Ken? Which dog is more friendly?	Shiba Inu dogs are not the most stranger-friendly dogs.	Shikoku dog dogs are average friendly towards strangers.	Kai Ken dogs are not the most stranger-friendly dogs.
Dog Breeds That Are Aloof With Strangers		Dog Breeds That Are Friendly To Strangers
Cat Friendly Which dog is more cat friendly Shiba Inu or Shikoku dog or Kai Ken?	Shiba Inu dogs are not the most cat-friendly dogs.	Shikoku dog dogs are average friendly towards cats.	Kai Ken dogs are cat-friendly dogs.
Dog Breeds That Get Along Well With Cats
Dog Friendly Which dog is more dog friendly Shiba Inu or Shikoku dog or Kai Ken?	Shiba Inu dogs are average friendly towards other dogs.	Shikoku dog dogs are average friendly towards other dogs.	Kai Ken dogs are dog-friendly dogs.
Good For First Time Owners Which dog is good for the first-time owners: Shiba Inu vs Shikoku dog vs Kai Ken?	No Shiba Inu dogs are not good for novice owners, due to their stubborn personality.	Yes Shikoku dog dogs are good for novice owners, due to their easy-going personality.	Yes Kai Ken dogs are good for novice owners, due to their easy-going personality.
Office Friendly Which one fits better in the office?	No Shiba Inu is not the best dog breed for office environment.	No Shikoku dog is not the best dog breed for office environment.	No Kai Ken is not the best dog breed for office environment.
Senior Citizens Friendly Which dog is good for elderly people?	Shiba Inus are commonly okay with elderly people.	Shikoku dogs are commonly okay with elderly people.	Kai Kens are one of the best breeds for elderly people.

Shiba Inu vs Shikoku dog vs Kai Ken As a Working Dog Comparison

Service Dog Capability Compare service dog potential between Shiba Inu, Shikoku dog, and Kai Ken. Which is best suited for service work?	Not really This breed generally not used as a service dog. See more.	Not really This breed generally not used as a service dog. See more.	Not really This breed generally not used as a service dog. See more.
Most Popular Service Dog Breeds
Therapy Work Suitability Compare therapy dog potential between Shiba Inu, Shikoku dog, and Kai Ken. Which excels in therapy work?	Not really This breed is generally not used as a therapy dog. See more.	Not really This breed is generally not used as a therapy dog. See more.	Not really This breed is generally not used as a therapy dog. See more.
Therapy Dog Breeds
Scent Detection Ability Compare detection capabilities between Shiba Inu, Shikoku dog, and Kai Ken. Which has best nose work ability?	Not really They are not typically employed for this type of work, but there may be exceptional cases.	Not really They are not typically employed for this type of work, but there may be exceptional cases.	Not really They are not typically employed for this type of work, but there may be exceptional cases.
Search & Rescue Potential Compare search and rescue potential between Shiba Inu, Shikoku dog, and Kai Ken. Which is best for SAR work?	Not really This dog breed is not typically used as a search and rescue dog.	Not really This dog breed is not typically used as a search and rescue dog.	Not really This dog breed is not typically used as a search and rescue dog.
Maritime Work Ability Compare boating aptitude between Shiba Inu, Shikoku dog, and Kai Ken. Which is best suited for water work?	Not really Shiba Inu breed usually doesn't like being on a boat. See more.	Not really Shikoku dog breed usually doesn't like being on a boat. See more.	Not really Kai Ken breed usually doesn't like being on a boat. See more.
Draft Work Capability Compare cart pulling abilities between Shiba Inu, Shikoku dog, and Kai Ken. Which is best for draft work?	Not really A drafting dog or draft dog is a dog bred and used for cart pulling. See more.	Not really A drafting dog or draft dog is a dog bred and used for cart pulling. See more.	Not really A drafting dog or draft dog is a dog bred and used for cart pulling. See more.
Military Service Background Compare military service history of Shiba Inu, Shikoku dog, and Kai Ken. Which has most military use?	Not really In history, this breed was not really used for combat dog.	Not really In history, this breed was not really used for combat dog.	Not really In history, this breed was not really used for combat dog.

Shiba Inu vs Shikoku dog vs Kai Ken Reproducibility Comparison

Puppy Litter Size Compare typical litter sizes of Shiba Inu, Shikoku dog, and Kai Ken. Which has most puppies?	2-4 puppies	4-6 puppies	2-4 puppies
Dog Name Generator – Find A Perfect Name For Your Puppy
Pregnancy Duration Compare gestation periods of Shiba Inu, Shikoku dog, and Kai Ken. Any breeding differences?	60-64 days See more.	60-64 days See more.	60-64 days See more.
Breeding Frequency Compare breeding intervals between Shiba Inu, Shikoku dog, and Kai Ken. What's recommended?	Once a year. More frequent breeding is not healthy. See more.	Once a year. More frequent breeding is not healthy. See more.	Once a year. More frequent breeding is not healthy. See more.

Shiba Inu vs Shikoku dog vs Kai Ken Recognition Comparison

AKC Classification Compare AKC groups for Shiba Inu, Shikoku dog, and Kai Ken. How are they classified?	Recognized by the American Kennel Club in 1992 as a Non-Sporting breed.	Not recognized by the American Kennel Club.	Not recognized by the American Kennel Club.
FCI Classification Compare FCI groups for Shiba Inu, Shikoku dog, and Kai Ken. How are they classified internationally?	Recognized by FCI in the Spitz and primitive types group, in the Asian Spitz and related breeds section.	Not recognized by FCI.	Recognized by FCI in the Spitz and primitive types group, in the Asian Spitz and related breeds section.
Kennel Club Recognition Compare breed recognition status of Shiba Inu, Shikoku dog, and Kai Ken. Which has most recognition?	American Canine Registry American Kennel Club America's Pet Registry Dog Registry of America Inc. Federation Cynologique Internationale Kennel Club of Great Britain North American Purebred Registry, Inc. American Canine Association, Inc. Australian National Kennel Council Continental Kennel Club National Kennel Club New Zealand Kennel Club	No data available	America's Pet Registry Dog Registry of America Inc. North American Purebred Registry, Inc. American Canine Association, Inc. Foundation Stock Service

Popular Dog Compares

Despite the best intentions, there may be errors. If you find one, please let us know and we will fix it as soon as possible. Contact us here.

Rate This Comparsion - Shiba Inu vs Shikoku dog vs Kai Ken

Reviews