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American Hairless Terrier Growth Chart
The American Hairless Terrier is the hairless variety of the Rat Terrier, developed in Louisiana in the 1970s from a naturally hairless puppy. Alert, curious, and full of terrier energy, they are one of the few truly hairless dog breeds. Most reach an adult weight of 12-28 lb between 10 and 12 months, with the wide range reflecting everything from small females to sturdy males.
View weight chart (lb & kg)Calculate Your American Hairless Terrier Puppy's Adult Weight
Enter your American Hairless Terrier puppy's age and current weight for an estimated adult weight range.
American Hairless Terrier weight by age
Typical male and female puppy weight ranges by age, available in lb and kg. Individual puppies may vary.
Most American Hairless Terrier puppies approach adult weight around 11 months, although individuals may finish earlier or later.
These estimated ranges combine the breed's adult weights with a size-based growth curve. They are not measured breed-specific percentiles or health targets. Month labels are rounded approximations; use the week values for each row. How these weight ranges are calculated
American Hairless Terrier Growth Stages
Understanding the typical growth stages helps you know what to expect as your American Hairless Terrier puppy grows.
Neonatal
0–2 weeksPuppies are born with eyes and ears closed, relying entirely on their mother. Rapid weight gain occurs during this period.
Socialization
3–12 weeksEyes and ears open. Puppies begin to explore, play, and learn social behaviors. This is a critical period for development.
Juvenile
3–6 monthsRapid growth continues. Puppies become more independent, start teething, and develop coordination.
Adolescent
6–10 monthsGrowth rate begins to slow. Puppies reach sexual maturity and may test boundaries. Muscle mass develops.
Young Adult
10–12 monthsGrowth is nearly complete. Your puppy is filling out and approaching adult proportions.
Adult
12+ monthsYour puppy has reached their full adult size. Weight should remain relatively stable with proper nutrition.
American Hairless Terrier FAQ
How much will my American Hairless Terrier puppy weigh as an adult?
Adult American Hairless Terriers typically weigh between 12 and 28 lb. The breed standard does not split this range by sex, so males and females share the same 12-28 lb band — smaller females often land near the lower end and sturdier males near the top.
At what age is an American Hairless Terrier fully grown?
Most reach adult weight between 10 and 12 months. Because the coat is missing, it is easy to see every rib and growth phase — judge progress by the scale and the weekly trend rather than by looks, since a lean-looking phase is often perfectly normal.
How accurate is an American Hairless Terrier puppy weight chart?
It is a useful reference, but the 12-28 lb adult span is one of the wider ones among small breeds, so individual variation is real. Puppies from smaller lines track the lower curve; those from larger lines track the higher one. Weigh regularly and watch the trend line, not single readings.
How much should an American Hairless Terrier puppy weigh at 12 weeks?
Check the 12-week row in the weight-by-age table above for the estimated range. If your puppy falls well outside that band, re-check the scale, the lb/kg setting, and the age entry first — a single off reading is more common than a truly unusual puppy.
Do male and female American Hairless Terriers grow differently?
The official adult range is the same for both sexes at 12-28 lb, and the sex difference is modest. Males may finish slightly larger, but the overlap is wide enough that one chart serves both well.