Loss of interest in play, walks, or favorite activities
Sleeping more than usual
Eating less or showing changes in appetite
Being withdrawn or avoiding interaction
Less tail wagging or reduced excitement when you come home
Lethargy or low energy
Increased clinginess or, in some cases, increased hiding
Changes in vocalizing, such as whining or being unusually quiet
Restlessness or pacing
Changes in grooming, such as neglecting self-care
House accidents in a previously trained dog
Irritability or unusual aggression
Excessive licking or chewing
Not responding to cues or seeming “shut down”
Signs lasting more than a few days or getting worse over time