The difference between us and our pets is that our pets can't outright tell us that they're in pain - often, the exact opposite is true - they hide all signs
of pain as a survival mechanism they developed
over thousands
of years of evolution to keep weakness hidden from predators and other members
of their own colonies, Your pet may tell you in different ways when they are uncomfortable, such as by whining or whimpering, staying too still and showing little interest in what's going on around them, sleeping more than usual, becoming aggressive or intolerant
of petting or exercise or even by becoming more active -
pacing, circling, wandering - as the pain is too much for them to sit still and
rest.