When is a Beagle fully grown?

Most Beagles reach their adult height by 12 months and their full adult weight and muscle mass by 18–24 months. They are classified as a medium-sized breed, so they mature faster than large or giant breeds.

How big will my Beagle puppy get?

Adult Beagles typically weigh 9–11 kg (20–24 lb) and stand 33–38 cm (13–15 inches) at the shoulder. Males tend toward the higher end of both ranges. Your puppy's parents' size is the best predictor of adult size.

My 6-month-old Beagle seems small. Should I worry?

Not necessarily — individual variation is normal. If your puppy is energetic, has a healthy coat, and is gaining weight steadily (even if below average), they may simply be on the smaller end. A veterinary check at the 6-month wellness visit can confirm growth is on track.

Beagle Growth Chart: What to Expect | PetCalculator

Beagles are a medium-sized breed that reach most of their adult frame by 12–18 months. Here's what healthy Beagle growth looks like from puppyhood through young adulthood.