"My dog, specifically at nighttime, will randomly growl... I was just petting her gently, and she growled. Other nights, we will just simply move, and she will be lying in her crate, and she'll growl.
They're part of the herding group, which means they're packing a lot of heavy, strong muscle under their coats. And you shouldn't let their cute faces fool you; these pups can get one up on you, ...
All that was needed was for a pup to grasp an extremity and the other pup the other, and off they went, tugging and growling to their hearts' content! Interestingly, many forms of dog play include ...