Ron, you're a little behind the times regarding animals and emotions. It is now fairly well established that most mammals experience some emotions, and those emotions are indistinguishable, by observed brain function, from human emotions (remember, we are also animals). Of course they don't think the way we do, nor do they make judgements, but more is going on in those furry heads than many of us realise. It is not good to anthropomorphise, but it is also not good to regard animals as clockwork machines set in motion by instincts (which humans also have) and purely reactive.

Some dogs and cats will go to great lengths to find an absent owner, even suffering hardships to do so and travelling great distances. Others will not. Dogs will grieve if another pet or an owner dies, and their sadness is indistinguishable from human sadness. Elephants will handle the bones of long dead herd members - why, we don't really know, but they don't bother with other animal bones, and they actually change their routes to visit these 'relatives' bones.