Cat · Large Breed
American Bobtail Age Calculator
Use this American Bobtail age calculator to convert cat years to human years. You can also check the average American Bobtail lifespan, adult weight range, growth chart, feeding guide, and breed facts in one place.
Quick Answer
American Bobtail facts at a glance
Average lifespan
11-15 years
Adult weight
3-7 kg
Fully grown
12-18 months
The Calculator
How old is your American Bobtail in human years?
At 1 year old
Your American Bobtail is approximately 15 in human years.
Field Notes
American Bobtail Lifespan, Size, and Care
The American Bobtail is a relatively modern breed that developed in the United States from naturally short-tailed cats rather than from docking. Breeders aimed to preserve the breed's bobbed tail, strong body, and rugged appearance while maintaining a stable, friendly temperament.
In temperament, American Bobtails are typically confident, social, and playful without being overly demanding. Many form strong bonds with their people, enjoy interactive games, and are often described as dog-like because they may follow family members around the house and adapt well to travel.
Care is fairly straightforward, but they do best with routine nail trims, dental care, high-quality nutrition, and regular veterinary checkups. Because they can be very food-motivated, portion control and weight monitoring are important to prevent obesity and the joint stress that can follow.
American Bobtails need daily exercise and mental stimulation to stay fit and well-behaved. Puzzle feeders, climbing trees, wand toys, short training sessions, and active play help satisfy their hunting instincts and prevent boredom.
Temperament
Exercise Needs
moderate
Health Watch
- Obesity
- Hip dysplasia
- Hypertrophic cardiomyopathy
- Dental disease
- Urinary tract problems
Grooming
American Bobtails need weekly brushing in most homes, with more frequent grooming during seasonal shedding, plus regular nail, ear, and dental care.
Growth Curve
American Bobtail weight chart
Typical weight progression from young to adult. The tinted band marks the healthy adult range. 3-7 kg.
Nutrition, Staged
American Bobtail Feeding Guide
Use this American Bobtail feeding guide as a starting point for common life stages, then adjust for body condition, activity, and veterinary advice.
Formative years
Young
Feed a complete kitten formula in several small measured meals each day, with the exact amount adjusted to growth rate and body condition. Kittens should stay on a growth diet until your veterinarian confirms they are ready for adult food.
Peak years
Adult
Feed a complete adult cat food in measured portions and monitor body condition closely, because indoor cats often need fewer calories than owners expect. Wet food, fresh water, and routine portion checks help reduce weight gain and support urinary health.
Mature years
Senior
Older cats often need closer monitoring of weight, appetite, hydration, and dental comfort even before a full diet change is needed. Ask your veterinarian about senior diets if kidney disease, thyroid disease, muscle loss, or digestive changes start to affect intake.
Questions, Answered
On the American Bobtail
That depends on the pet's actual age. Use the calculator above to estimate a American Bobtail's age in human years using the method shown on this page.
Most American Bobtails live 11-15 years, although genetics, diet, body condition, husbandry, and preventive care all influence the real outcome.
A full grown American Bobtail usually weighs 3-7 kg, though sex, lineage, and body condition can move an individual above or below the average range.
Most American Bobtails are close to full size around 12-18 months, although growth rate and final build vary from one pet to another.
Use the feeding guide above as a starting point, then adjust for age, body condition, activity, and your veterinarian's recommendations.
Yes, American Bobtails are usually excellent family cats because they are social, adaptable, and tolerant of household activity. They often do well with respectful children and other pets when introductions are handled properly.
They are moderately active and benefit from daily interactive play rather than being left to entertain themselves. Climbing furniture, puzzle toys, and short play sessions help prevent boredom and weight gain.
They can shed a moderate amount, especially during seasonal coat changes, but grooming needs are generally manageable. Weekly brushing is usually enough to control loose hair and keep the coat in good condition.
Overall, they are considered a fairly hardy breed, especially when obtained from responsible breeders who screen breeding cats. Like many cats, they can still develop issues such as obesity, heart disease, dental problems, or joint disease, so preventive care matters.
Most American Bobtails live normal, comfortable lives with their naturally shortened tails. However, tail and spinal structure should be evaluated carefully, and kittens should come from breeders who avoid lines with structural defects.
Adjacent Breeds
