Kazoo Puppy Teether is safe for gnawing as (even though it looks like a bone, it's not) it's made from 100% natural rubber. Puppies start teething from around 4 months of age and continue until their baby teeth are replaced by adult canines and molars. During this time, they like to explore the world with our mouths.,Kazoo Puppy Teether is safe for gnawing as (even though it looks like a bone, it's not) it's made