Cat Breed Comparison
American Curl vs American Shorthair: Key Differences
American Curl and American Shorthair are often confused. Compare their size, weight, lifespan, origin, temperament, and health — and learn how to tell them apart at a glance.
Quick Comparison
| Trait | American Curl | American Shorthair |
|---|---|---|
| Size | Small to Medium | Medium to Large |
| Weight | 5–10 lbs (2.2–4.5 kg) | 8–15 lbs (3.6–6.8 kg) |
| Lifespan | 12–16 years | 12–17 years |
| Origin | United States (Lakewood, California, 1981) | United States |
Visual Differences
Telling a American Curl from a American Shorthair
A straight-eared Curl can pass for a generic shorthair, and the ear arc is the giveaway. American Shorthairs are heavier-boned, rounder-faced working cats with a dense plush coat; Curls are finer-boned with a silky, flat-lying coat and a longer tail in proportion to the body.
American Curl Key Markers
- Ears arcing backward from the face in a 90 to 180 degree curve — the defining trait; kittens are born straight-eared, the curl develops over the first weeks, and the cartilage hardens by about four months of age
- Ear structure — the outer third of the ear is stiff cartilage rather than bone; the curl must never be bent, creased, or handled roughly; show cats are disqualified for flat or kinked ears
- Soft wedge head, longer than wide, with a gentle transition from forehead to nose — neither round like a Persian nor pointed like a Siamese; the muzzle is neither square nor sharp
American Shorthair Key Markers
- Dense, short coat that lies flat against the body — each hair tapers to a fine point, giving the coat a hard protective texture developed for outdoor working life; the CFA calls it a "layer-like" coat that repels light moisture and dirt
- Round, full face with a short muzzle, well-developed whisker pads, and a gentle curving profile with a visible stop — the head is large and broad, wider than it is long, with no flat planes
- Large, round wide-set eyes in copper, gold, green, hazel, or blue-white odd eyes in whites — brows are prominent, giving the face an open, friendly expression described as "alert and smiling" in the CFA standard
Temperament & Personality
American Curl
- Friendly and even-tempered — adapts quickly to new people, homes, and pets
- Affectionate without being needy — enjoys laps and attention but settles contentedly alone
- Playful at every age — stays active and kittenish into its teens; many learn fetch
- Quiet — communicates in soft chirps and trills rather than loud meows
- Easygoing with handling — tolerant of children, grooming, and vet visits
- Intelligent — curious and trainable; responds well to clicker training and puzzle toys
American Shorthair
- Even-tempered and easygoing — adapts well to changes in routine, travel, and new household members
- Independent but affectionate — enjoys lap time on their own terms and follows owners quietly, but does not demand constant attention
- Excellent with children and other pets — the breed’s working-cat heritage developed a calm, tolerant temperament that rarely startles or scratches
- Moderate activity level — enjoys play sessions but settles easily into lounging; not as high-energy as Abyssinians or Bengals
- Quiet communicator — uses soft meows and trills, rarely loud or demanding
- Good mouser — retains strong hunting instincts from its working breed origin
Health Notes
American Curl
- Ear infections — the curled ear canal is narrow and traps wax and debris; check ears weekly and clean gently with a vet-approved solution; head shaking, scratching, or a smell from the ear means a vet visit
- Hypertrophic cardiomyopathy (HCM) — reported in the breed; annual cardiac screening recommended for breeding cats
- Ear trauma — the outer ear is stiff cartilage, not bone; bending, creasing, or rough play can permanently deform the curl, so ears need gentle handling and protection from ear-pulling play
- Obesity — an easygoing indoor lifestyle plus a love of food can pack on weight; portion-controlled feeding keeps the slender frame sound
American Shorthair
- Hypertrophic cardiomyopathy (HCM) — the most common heart disease in American Shorthairs; regular cardiac screening recommended
- Obesity — the breed’s moderate activity level and adaptable nature mean weight management is a priority throughout life
- Hip dysplasia — seen more often in the larger-boned lines; maintaining lean body condition reduces symptoms
- Dental disease — compact muzzle structure contributes to tooth crowding and gingivitis; regular dental care recommended
- Feline lower urinary tract disease (FLUTD) — some lines show predisposition; high-moisture diet helpful as a preventive measure
This information is for educational purposes only. Always consult a veterinarian for health advice specific to your cat.
Frequently Asked Questions
How can I tell a American Curl apart from a American Shorthair?
Are American Curl cats hypoallergenic?
Are American Shorthairs hypoallergenic?
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Breed Profiles & More Comparisons
American Curl
The American Curl is the cat whose ears arc backward in a 90 to 180 degree curve, a natural mutation that appeared in a stray kitten on a doorstep in Lakewood, California, in 1981. Every Curl is born with straight ears that start curling within days and fix in place by four months. Beyond the ears, it is a moderate, friendly, medium-size cat in every coat color and length.
American Shorthair
A sturdy, even-tempered working cat breed descended from European cats that crossed the Atlantic with early settlers. Known for a dense protective coat, a round full face, and a quiet adaptable personality — the breed standard prizes longevity and robust health above all.