Dog facial expressions, from puppy-dog eyes to the guilty look, offer clues to their emotions, but understanding them requires body language and context.
Urine marking turns ordinary trees and posts into scent-rich places for dogs, while sudden changes—especially indoors—can signal that something else is going on.
That sideways glance is irresistible, but what does it mean? Two studies offer intriguing clues about head tilting, communication, and the difference between a curious gesture and a medical warning.