Glen of Imaal Terrier Weight & Growth Chart

Complete weight guide with growth charts for male and female Glen of Imaal Terriers from puppy to adult.

Male Adult Weight

32–40 lbs

Female Adult Weight

27–35 lbs

Glen of Imaal Terrier Weight Overview

Adult Glen of Imaal Terriers typically weigh between 32 and 40 pounds, with males generally being larger than females. Males average 32–40 lbs while females typically weigh 27–35 lbs.

Surprisingly heavy for their height at 32 to 40 pounds and only 12.5 to 14 inches tall, their low center of gravity and powerful build belie their compact stature..

Growth Chart

When Does a Glen of Imaal Terrier Stop Growing?

Expect your Glen of Imaal Terrier to reach adult height of 12–14 inches by 12–15 months. Full body maturity—including muscle development toward the 32–40 lb target—may continue until 14–18 months.

Growth is influenced by genetics, nutrition quality, and spay/neuter timing. Eye diseases, particularly PRA and cone-rod dystrophy, are the breed's primary genetic concerns, making DNA testing and regular ophthalmological exams essential..

Is My Glen of Imaal Terrier Overweight?

Assessing your Glen of Imaal Terrier's body condition (healthy range: 32–40 lbs):

Rib check: Run your hands along the ribcage—you should feel individual ribs under a slight fat layer
Overhead view: A defined waist should be visible between ribs and hips
Side profile: The abdomen should tuck upward behind the last rib

Overweight Glen of Imaal Terriers face higher risks of Progressive Retinal Atrophy, joint problems, and shortened lifespan. Even for a small-sized breed, excess weight significantly impacts joint health and overall wellbeing. Work with your vet to adjust feeding and exercise if needed.

Feeding Recommendation

An adult Glen of Imaal Terrier's daily food intake is typically 0.5–0.8 cups of high-quality kibble, fed in two meals. Surprisingly heavy for their height at 32 to 40 pounds and only 12.5 to 14 inches tall, their low center of gravity and powerful build belie their compact stature.. At 32–40 lbs with energy level 3/5, Eye diseases, particularly PRA and cone-rod dystrophy, are the breed's primary genetic concerns, making DNA testing and regular ophthalmological exams essential..

Weight by Age Table

Age	Male (lbs)	Female (lbs)
3 months	9.2–10.8	7.8–9.2
6 months	20.2–23.8	17.1–20.3
9 months	29.3–34.7	24.8–29.6
12 months	36.6–43.4	31.1–36.9

Frequently Asked Questions

Males: 32–40 lbs. Females: 27–35 lbs. Surprisingly heavy for their height at 32 to 40 pounds and only 12.5 to 14 inches tall, their low center of gravity and powerful build belie their compact stature.. Consult your vet for a personalized assessment.

Height plateaus around 12–15 months for the Glen of Imaal Terrier, with males reaching 40 lbs and females 35 lbs at maturity. As a terrier breed originally from Ireland, they were bred for a compact, sturdy build.

Use the body condition scoring method: ribs easily felt, visible waist from above, and abdominal tuck from the side. If your Glen of Imaal Terrier exceeds 40 lbs without exceptional muscle mass, they are likely overweight. Obesity is particularly dangerous for this breed due to their predisposition to Progressive Retinal Atrophy. Your vet can provide a precise assessment and weight loss plan.

Feeding amounts depend on age, current weight, and the Glen of Imaal Terrier's expected adult size of 32–40 lbs. Puppies under 6 months need 3–4 meals daily; older puppies eat twice daily. A high-quality puppy food formulated for small breeds provides the right nutrient balance. Eye diseases, particularly PRA and cone-rod dystrophy, are the breed's primary genetic concerns, making DNA testing and regular ophthalmological exams essential..

A Glen of Imaal Terrier puppy not gaining weight needs veterinary attention. Expected growth milestones lead to an adult weight of 32–40 lbs (males 32–40, females 27–35). Possible causes: parasites, insufficient calorie density in food, stress, or underlying conditions. Ensure the puppy is eating without competition from littermates or other pets.