5. Licking constantly

Animals don’t just lick themselves to get clean; sometimes they use the action to make themselves feel better. While it’s not a common symptom of dog depression, it isn’t unheard of, says Dr Ryan. “If dogs have anxiety issues, they could be doing more compulsive-licking behaviour that can be self-soothing,” she says. “They pick a spot and keep licking it.”
So if you spot your dog licking its paws on repeat, you may want to keep a close eye out for other signs of doggy depression.
Check out these unexpected reasons your dog might have anxiety.
6. Showing sudden aggression

A dog with depression might start tearing up the couch or growling when you touch it. “It’s not always the sad, forlorn basset hound-looking face you think of as the face of depression,” says Dr Nelson. Depression shouldn’t be your first thought if your dog has always been aggressive, but a cuddly pooch that suddenly snaps might be telling you something’s wrong.
If you see these 11 behaviours, your dog might need obedience training.
7. Whimpering or whining

Puppies instinctually use these noises to communicate with their mother, and they may continue this method of ‘crying out’ as adult animals, particularly if you respond to it, Dr Simon says.