At a glance the quick version
FCI and The Royal Kennel Club standard give 5.4-8 kg (12-18 lb) with no split by sex; PDSA quotes 5.4-8.2 kg. UKC gives 12-18 lb in proportion to height.
Coat and looks how to spot one
long, silky and feathered
A long, soft coat that lies straight or with a gentle wave, with generous feathering on the ears, legs, feet and tail, and shown completely untrimmed. The dog itself is a small, balanced spaniel with a nearly flat skull, large round dark eyes, long high-set ears, a short but not flat muzzle and a full-length tail carried cheerfully at about back level.346
Personality what they are like
A sweet-natured, cheerful little dog that mixes the easygoing charm of a lap dog with the lively spirit of a sporting spaniel. It is outgoing and trusting, rarely nervous, keen to please and usually gets on well with children and other animals when socialised.3754
Daily activity how busy a day looks
Moderately active: around an hour of exercise a day, ideally split into a few walks with some off-lead play, plus games and short training sessions.52
Grooming and care the hands-on bits
The silky coat needs regular attention: brushing daily or several times a week keeps the feathering free of tangles, with extra brushing in spring and autumn shedding and an occasional visit to a groomer. The breed standard calls for no trimming in the show ring.523
Home where they are happiest
Very adaptable and happy in a flat or apartment, with a small to medium garden a bonus. What matters most is having people around for much of the day.25
Food basics what goes in the bowl
A complete commercial dog food split into two meals a day, portioned for age and lifestyle, with treats kept to no more than about 10 percent of daily calories.5
Company who they like around
A true companion breed that wants to be with its family as much as possible; PDSA advises not leaving one alone for more than about four hours. Usually sociable with other dogs and pets.5
The story where it all began
Small toy spaniels were popular in Britain and Europe from the 16th century and became court favourites under Charles I and Charles II, whose supporters were known as Cavaliers. In the early 18th century the first Duke of Marlborough kept red and white spaniels at Blenheim Palace, giving the Blenheim colour its name. Victorian show fashion later favoured a flatter face and domed skull, which became the King Charles Spaniel (English Toy Spaniel). In 1926 the American Roswell Eldridge offered prize money at Crufts for spaniels of the older type seen in paintings of Charles II's era. Breeders took up the challenge, a club was formed in 1928 around a dog called Ann's Son, and the Kennel Club accepted the Cavalier King Charles Spaniel as a separate breed in 1945. The breed was rebuilt after the Second World War from very few dogs, reached the United States in the 1950s, gained UKC recognition in 1980 and AKC recognition in 1995, and has since become one of the best-loved companion dogs.264
Fun facts for the dinner table
- 1
The breed is named after King Charles II and the Cavaliers, the supporters of the crown in the English Civil War period.6
- 2
The Blenheim colour is named after Blenheim Palace, where the first Duke of Marlborough kept red and white spaniels.6
- 3
Many Blenheims carry a chestnut spot on the top of the head called the 'lozenge' or 'Blenheim spot', which legend nicknames the 'Duchess Thumb Print'.6
- 4
The modern breed exists thanks to a prize offered at Crufts in 1926 by American Roswell Eldridge for spaniels of the old type seen in royal portraits.6
- 5
A popular story says King Charles II decreed the dogs could go anywhere in the UK, but the UK Parliament says no such law exists.6
- 6
Famous owners include Queen Victoria, Margaret Thatcher and Ronald Reagan, who had a Blenheim named Rex.6
- 7
The breed standard says the coat must be shown completely free from trimming.3
Recognised by the official bits
- The Royal Kennel Club
- Toy Group; recognised as a breed in its own right in 1945 (decision dated 5 Dec 1944 per Wikipedia); breed club founded 19282
- FCI
- Standard No. 136, Group 9 (Companion and Toy Dogs), Section 7 English Toy Spaniels; definitive acceptance 20 Jan 1955; current standard published 1 Dec 2009; no working trial1
- UKC
- Companion Dog Group; recognised 19804
- AKC
- Toy Group; recognised 19956
Popularity No. 12 of AKC-registered breeds in 20258
The care rhythm Furry Diary remembers it for you
A typical home-care rhythm for a Cavalier King Charles Spaniel. It is our own starting plan, not a vet's advice, and you can change every line in the app.
- Brushingevery 2 days
- Bathevery month
- HaircutTrim feathering and feet, or keep a short cutevery 8 weeks
- Nail trimSooner if you hear clicking on the floorevery 3 weeks
- Ear checkFloppy ears trap moisture, so check and dry themevery week
- Teeth brushingDaily brushing is idealevery day
- Eye wipeGently wipe around the eyesevery day
- ExerciseAbout 60 minutes a dayevery day
- Flea, tick and worm protectionSchedule as your vet recommendsas your vet recommends
- Vet check-upSenior years usually start around age 10every year
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Where this comes from
Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at support@furrydiary.app and we will fix it.
- FCI nomenclature: Cavalier King Charles Spaniel (136) fci.beused for recognition, origin, colours
- The Royal Kennel Club: Cavalier King Charles Spaniel royalkennelclub.comused for recognition, exercise, grooming, home, lifespan, history
- FCI standard No. 136 fci.beused for temperament, coat, colours, weight
- UKC breed standard: Cavalier King Charles Spaniel ukcdogs.comused for recognition, height, weight, coat, history
- PDSA: Cavalier King Charles Spaniel pdsa.org.ukused for size, exercise, grooming, diet, social needs
- Wikipedia: Cavalier King Charles Spaniel en.wikipedia.orgused for history, lifespan, fun facts, AKC recognition
- AKC: Cavalier King Charles Spaniel akc.orgused for temperament
- AKC: Most Popular Dog Breeds of 2025 akc.orgused for popularity
Checked 2026-09-30. Text is written in our own words from these sources.