How big do Rottles get?
Rottles are a large breed and reach a typical adult weight of 27–40kg (60–88lbs). They are fully grown by around 12–18 months.
How big is a fully grown Rottle?
A fully grown Rottle is a substantial dog, typically weighing between 27–40kg. This puts them in the large dog bracket.
Male Rottles tend to be larger than females, generally weighing toward the upper end of that range. Females are typically lighter and slightly shorter. Individual variation within the breed is normal — genetics, diet, and health all play a role.
When do Rottles stop growing?
Rottles reach their full adult height fairly quickly, but continue to fill out in muscle and bulk after that. Large breeds like the Rottle typically reach full adult size at around 12–18 months. Their skeleton reaches full height first, followed by muscle development over the next several months. Until they're fully grown, avoid high-impact exercise (jumping, running on hard surfaces) to protect developing joints.
Is a Rottle the right size for me?
Size matters more than people realise when choosing a dog. Here's what 27–40kg means in practice:
- Food costs increase with size — a Rottle at 40kg needs significantly more food than a small breed.
- Space requirements — a large breed needs room to move. A small flat works if exercise needs are met, but they do better with outdoor space.
- Pet insurance is higher. Larger breeds cost more to insure because treatments and surgeries scale with body weight.
- Lifespan is affected — large breeds live 9–13 years on average.
How do I keep my Rottle at a healthy weight?
The target range for an adult Rottle is 27–40kg. A simple check: you should be able to feel their ribs without pressing hard, but you shouldn't be able to see them. Viewed from above, there should be a visible waist.
Obesity is the most preventable health problem across all dog breeds — and Rottles are not immune to it. Measure food portions rather than estimating, limit treats to 10% of daily calories, and factor in daily exercise as part of their routine.
If you're unsure whether your Rottle is a healthy weight, ask your vet at their next annual check-up. Most practices offer free nurse weight clinics.
More about Rottles
Everything you need to know before getting a Rottle