"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.

As mentioned, growling is a distance-increasing behavior, and its function is often to increase space or stop an interaction that the dog finds uncomfortable. In the case of a dog that growls upon a ...

"After my dog’s TPLO knee surgery, he has a few times now growled at my wife. It is only when we are sitting in the living room (he is in a confined area still) and she comes home from work through ...