Manx
MANKS
Playful, Loyal, Smart, Dog-like. Origin: Isle of Man (British Isles).
An adult Manx weighs 8-12 lbs (male) or 7-11 lbs (female), needs 170-350 calories daily, and lives 8-14 yrs. The breed's primary health watch is manx syndrome (spinal defects). All numbers below come from breed standards and NRC 2006 veterinary nutrition formulas.
Nutrition and feeding
A typical adult Manx needs 170 to 350 calories per day. An average male (10 lbs / 4.5 kg) needs around 260 kcal; a female (9 lbs / 4.1 kg) roughly 240 kcal.
Estimate for a typical adult Manx. For kittens, seniors, or specific conditions, use the full calorie calculator.
Health profile
The Manx's tailless appearance results from a genetic mutation affecting spinal development. This same gene can cause 'Manx syndrome,' a range of spinal defects including shortened spine, fused vertebrae, and nerve damage affecting bowel and bladder control. Not all Manx cats are affected, but the risk is real, particularly in completely tailless ('rumpy') individuals. Responsible breeders screen carefully. Life expectancy is 12 to 14 years.
Exercise and activity
Moderate; playful and sometimes described as dog-like. Enjoys fetch and interactive play. A balanced mix of active play and quiet companionship suits most Manx cats. They adapt to their owner's lifestyle but should not be entirely sedentary.
Care and traits
Manx cats have a short or longhaired (cymric), double coat, dense coat. Origin: Isle of Man (British Isles).
Famous for their taillessness, which results from a natural genetic mutation. The gene is semi-lethal; breeding two completely tailless (rumpy) Manx cats can produce lethal spinal defects in kittens. Manx syndrome (spinal deformities, bowel/bladder issues) can appear in kittens up to 4 months old. Not all Manx are tailless; they range from 'rumpy' (no tail) to 'longy' (full tail).
The Manx is well-suited for families with children. They are typically patient and tolerant, though all cat-child interactions should be supervised until children learn appropriate handling. Teaching children to respect the cat's space and body language prevents most problems.
Not all Manx cats are completely tailless. The breed ranges from 'rumpy' (no tail) to 'stumpy' (short tail) to 'longy' (near-normal tail). Their powerful hind legs give them a distinctive rabbit-like gait and impressive jumping ability. They are quiet, loyal cats that bond with family while remaining independent enough to entertain themselves.
Tools for Manx owners
Frequently asked questions
Daily calorie needs for a Manx range from 170 to 350 kcal. An average individual at 10 lbs falls near the middle of that range. Two measured meals daily keeps most medium cats at a healthy weight. Avoid free-feeding unless your cat self-regulates well, which many do not. Use our calorie calculator with your cat's actual weight for a personalized number.
Males typically weigh 8-12 lbs (3.6–5.4 kg), while females are lighter at 7-11 lbs (3.2–5.0 kg). Feel for ribs along the sides. They should be easy to find under a thin layer of flesh. View from above: a visible waist narrowing behind the ribs indicates healthy condition.
Veterinarians most frequently screen Manx cats for manx syndrome (spinal defects). Manx syndrome encompasses spinal defects that can result from the tailless gene. Symptoms range from mild (constipation) to severe (incontinence, spinal damage). Not all tailless cats are affected, but the risk is real. Other conditions to monitor include arthritis (tailless spine), megacolon. Not every Manx will develop these conditions, but awareness and regular vet checkups make a real difference.
Moderate play needs that most owners can easily meet. One or two interactive play sessions of 10-15 minutes daily, combined with access to a cat tree and window perch, keeps this breed content. They enjoy play but are equally happy relaxing. Every cat, regardless of breed, benefits from some daily play and enrichment. Even five minutes of chasing a wand toy is better than nothing.
Disclaimer: General breed information based on TICA/CFA standards and veterinary sources. Individual cats vary. Calorie estimates use the RER/MER formula (NRC 2006). Consult your veterinarian for advice specific to your cat. See our sources.
Last reviewed: April 1, 2026