American Curl

The American Curl has one of the most complete and best-documented single-founder origin stories in the pedigreed cat world. In **June 1981**, Grace and Joe Ruga of Lakewood, California took in a stray black long-haired female cat whose two ears curled backward into a clear arc. They named her **Shulamith** (after the beautiful dancer in the Song of Solomon).

In December 1981 Shulamith produced her first litter, two of whom inherited the curled ears. Breeder Nancy Kiester and geneticist Roy Robinson joined the study and in 1986 confirmed in *J Hered* that the curled ear is an **autosomal dominant trait (Cu locus)** — only one parent needs to carry the gene to pass it on, and **both heterozygotes (Cu/+) and homozygotes (Cu/Cu) are free of any known health risk** (a fundamental difference from the Scottish Fold's dominant Fd allele, which causes cartilage anomalies).

**Registration timeline**: - **1983**: first registered by TICA - **1986**: Robinson confirms the single-gene inheritance mechanism - **1993 CFA recognition** (Championship status) — the first breed CFA recognized **simultaneously in both longhair and shorthair varieties** - **1999**: CFA fully recognizes both longhair and shorthair divisions - **GCCF and FIFe**: partial recognition today; the breed remains uncommon in Europe

**Founder singularity**: every American Curl in the world descends directly from Shulamith — **the second textbook case of an entire breed founded by a single cat, after the Devon Rex (Kirlee)**. To prevent inbreeding depression, CFA and TICA still allow **American Curl x non-pedigreed domestic** outcrossing to this day, making the breed one that actively maintains a broad gene pool.

The American Curl's **only unique feature** is the ear — cartilage that **starts to curl backward and inward mid-development**, forming a 90 to 180-degree arc. This is the most fundamental morphological difference from every other domestic cat.

**How the curl develops** (crucial to understanding the breed): - **At birth**: ears are **completely normal (upright)** - **3-10 days**: ears begin to curl backward - **4 months**: the curl is essentially set - **Adulthood**: the arc no longer changes

**Curl grading (CFA show standard)**: - **Grade 1**: slight curl (about 90-120 degrees) - **Grade 2**: moderate curl (120-150 degrees) - **Grade 3**: full curl (150-180 degrees, near a half-circle) - Show quality favors **Grade 3**; pet-quality Grade 1-2 is perfectly fine

**Other features**: - **Head**: modified wedge, medium width, natural nose curve, no extreme features - **Eyes**: **walnut-shaped**, halfway between round and almond; all colors accepted - **Body**: medium-sized, males 3-5 kg, females 2.5-4 kg. Medium-length torso with limbs in proportion — one of **the most balanced skeletons** among domestic cats - **Coat**: - **American Curl Shorthair**: short, close-lying, minimal or no undercoat - **American Curl Longhair**: medium length, silky, with a plumed tail - **Colors**: **all colors and all patterns are accepted** (solid, tabby, tortie, bicolor, point, silver) — one of the very few breeds with no color restriction

**About the curl cartilage**: **the outer-ear cartilage is slightly firmer than in ordinary cats**, and you can feel a distinct springiness when handling it. **Never try to straighten the ear** — damaging the outer-ear cartilage causes permanent deformation (a mistake many first-time kitten owners make; the damage cannot be repaired).

The American Curl's temperament is repeatedly summed up in CFA and TICA breed descriptions with the phrase **'Peter Pan of the cat world'** — because it retains kitten-like curiosity, energy and sociability well into old age (Curls over 10 still behave like kittens).

**Key behavioral traits**: 1. **Highly curious**: actively investigates new furniture, visitors, food and open boxes. **Always call out before closing a door** to be sure they are not shut inside 2. **Door-greeter and shadow**: runs to greet you when you come home and follows you around the house 3. **Quiet voice**: **the American Curl's biggest contrast with the Siamese, Burmese or Devon Rex** — quiet, gentle mews and rarely vocal for long stretches 4. **Excellent with children**: possibly **one of the best domestic cats for households with young children**. **Tolerates being carried, stroked and followed with almost no biting or scratching**. This is an officially recognized breed characteristic in CFA 5. **High tolerance for dogs and other cats**: a top pick for multi-pet households 6. **Above-average intelligence**: can learn to respond to its name, follow simple commands and open drawers, though it learns more slowly than a Burmese or Devon Rex

**Alone-time tolerance**: **better** than the Burmese, Devon Rex or Bombay, but **still needs company** — under 10 hours alone per day is fine; over 10 hours, adopt in pairs.

Key points for the daily care of an American Curl:

1. **Handling the curled ear correctly (the single most important rule)**: - **Never force the curled ear straight** — excessive force on the outer-ear cartilage causes **permanent deformation or fracture** - When examining the ear canal, **support only the base of the ear gently** - The curl narrows the ear canal, reduces airflow and traps wax - **Once a week, use a pet-safe ear cleaner and cotton ball to wipe the outer ear** (never push a cotton swab deep in) - Dark brown wax with an odor, head-shaking or ear-scratching may indicate ear mites or a Malassezia infection — see a vet

2. **Grooming (by coat length)**: - **Shorthair**: once a week with a rubber grooming glove - **Longhair**: twice a week with a long-tooth pin brush plus a fine comb - Double the frequency during spring and fall shedding seasons

3. **Diet**: - Standard high-protein cat food (protein >32%) is enough - Medium metabolism, 2-3 meals a day - Watch calorie intake in middle age (mid-life obesity rate is roughly average for domestic cats)

4. **Exercise and environment**: - Moderate exercise needs - A medium cat tree (100-150 cm), wand toys and puzzle feeders are enough - No need for tall vertical space

5. **Teeth and claws**: - Standard care - Middle-age gingivitis rates are similar to ordinary domestic cats — schedule an annual dental check

6. **Multi-pet management**: the Curl fits into **almost any multi-pet household** without special measures.

The American Curl is **one of the healthiest pedigreed cat breeds** — the **key advantage** over the Scottish Fold, another ear-mutation breed but with severe consequences.

**The critical difference**: - The Scottish Fold's fold gene (Fd) **also causes systemic cartilage abnormalities** (osteochondrodysplasia, OCD): heterozygotes are affected, homozygotes are severely disabled - The American Curl's Cu gene **only affects outer-ear cartilage — other cartilage is unaffected**, and both heterozygotes and homozygotes are healthy - **The Curl has never been listed as a structurally compromised breed** in any breed health survey (CFA Health Committee, ICatCare)

**Overall health**: 1. **No breed-specific hereditary disease**: to date CFA, ICatCare and UFAW have not classified the American Curl as a high-risk hereditary disease breed 2. **Normal hearing**: the curl involves only the outer ear; middle and inner ear are entirely normal, with hearing equal to any ordinary domestic cat 3. **Hearing exception**: white-coated blue-eyed Curls carry the same W-gene congenital deafness risk (~65%) as any white cat — unrelated to the curled ear

**Issues shared with all domestic cats**: 1. **Feline lower urinary tract disease (FLUTD)** 2. **Obesity** (in middle age) 3. **Periodontal disease and FORL** 4. **Senior CKD** (common past age 10) 5. **HCM**: incidence is on par with the general cat population; no breed enrichment

**Average lifespan**: **13-16 years**; with responsible care, over 18 is not rare.

**Recommended breeder screening**: - White, blue-eyed individuals: BAER congenital-deafness test - Cardiac ultrasound (optional, not mandatory) - Routine bloodwork

The American Curl is **one of the best cats for first-time owners** — striking looks, robust health, stable temperament and simple care.

**A good match for**: - First-time cat owners (no complex care to master) - Households with children, elderly members or other pets - Urban apartments (no need for tall vertical space) - Families that want a unique appearance (curled ears) plus a stable temperament and long lifespan - Longhair or shorthair to match owner preference (shorthair is lower-maintenance, longhair is showier) - Owners who want a quiet pet without going too aloof (the Curl strikes the perfect balance of quiet but not distant)

**Not a match for**: - Owners expecting extreme clinginess (look at the Burmese, Devon Rex or Sphynx instead) - Households wanting a highly active or independent hunter cat (look at the Bengal, Abyssinian or Chinese Li Hua instead) - Owners unwilling to handle occasional ear cleaning (though the frequency is low)

**Special notes**: - **Must be kept indoors** (not because of the curl — the standard recommendation for all domestic cats) - When buying, ask the breeder for the **curl grade plus a BAER hearing test on white blue-eyed kittens** (if applicable) - **Beware of unscrupulous crossbreeding**: some questionable breeders combine the Cu (curl) and Fd (fold) genes in hybrids, producing individuals carrying both — those individuals face the **same health risks as Scottish Folds**. Always ask the breeder for **at least three generations of documented pedigree free of any Scottish Fold ancestry** - **Strong recommendation**: the American Curl is **an excellent 'adopt, don't shop' candidate** — it originated from the stray Shulamith and does not depend on extreme features, so many rescues carry Curl-descended cats