Need a pick-me-up today? Watch a video of a smiling dog – it should do the trick. Any dog can smile, and according to veterinary behavior specialist Dr. Lore Haug, some breeds are even genetically ...

Coming home to my dog after a long day can sometimes make all the difference. Waiting for us all day, she wags her tail in excitement and showers us with puppy "kisses" as a sign of affection. The ...

When the dog feels happiness, the amygdala triggers an increase in hormones, including oxytocin, dopamine, and serotonin.