Pregnant dogs may also become more aggressive as they feel
protective over the puppies that they are carrying.
Not exact matches
It is hard to say without more details, but your
puppy may be barking just to play or they may be barking because they are nervous or
protective over a toy.
Resource guarding is a natural reaction by dogs and
puppies to become
protective over a resource when they sense a danger it may be taken away from them.