Is puppy size an indicator of adult size?

If your puppy's legs seem to be the right size for their body, chances are they won't grow any longer. If you look at the puppy's height and weight between 14 and 16 weeks of age, you can calculate the puppy's adult size by doubling the current size.

Is puppy size an indicator of adult size?

If your puppy's legs seem to be the right size for their body, chances are they won't grow any longer. If you look at the puppy's height and weight between 14 and 16 weeks of age, you can calculate the puppy's adult size by doubling the current size. There is no exact science behind this method, but it does give you a better prediction of size than just looking at the puppy's paws. Those at the end of the pocket scale generally reach adult size at six months of age, while a giant large dog continues to grow for 18 to 24 months.

If you celebrate National Puppy Day (March 23, 2020) with a new pet of your own, you can use a classic trick to imagine how big it will be as an adult. The adult size of a puppy can be difficult to predict if the parents are unknown or if the parents' mixed breeds are unknown. According to Vet Street, the size of a puppy's legs can sometimes contain clues to its weight later in life. If you're seeing an older puppy, the puppy has reached approximately 75 percent of his adult height around 6 months of age because the growth plates of long bones close between 8 and 11 months of age.

To answer the question of how big your puppy will be, here is an overview of how long puppies grow, how breed affects size, and to predict the puppy's adult weight from the current one. Having an idea of the adult size your puppy will reach helps you plan ahead for a dog cage, collar, fence in your yard, and other future needs. Large dogs will raise large offspring and the size of the puppy's legs does not mean that it will be the giant or smallest in the litter. You may have heard that the size of a puppy's paw can give you an idea of how big your puppy will be, but that's not always an accurate indicator.

Now that you have a general idea of the size your puppy will be, you have a better idea of the size of the collar and cage he will need once he is an adult. So while it doesn't hurt to check the size of your puppy's paws for fun, maybe wait before updating their bed size to match their feet.

Calvin Holmer
Calvin Holmer

An owner of three great dogs and an avid learner. Experienced with training dogs of all sizes and personalities (including the stubborn small ones!)