Sometimes it seems as if our pets wear their hearts on their sleeves - so to speak! They wag their tails or jump for joy when we return home (even if we were only gone for 10 minutes). They whine when they want to go out. They become your shadow when they’re hungry. They snuggle up with you and shower you with unconditional love just when they, and you, need it most. But how do we know when our cats or dogs are in pain? They can’t tell us with words, but they can show us with their behaviors.