A sad dog may lose interest in play and seem distant.
If your dog sleeps too much or too little, they might be upset.
Constant licking or chewing could mean stress or anxiety.
A moody dog might growl or snap more than usual.
Sudden potty accidents may signal distress or sadness.
A loss of appetite can mean your pup is feeling down.
If they hide often, they could be feeling scared or lonely.