People care a lot for animals. What sucks the most for them is when they loose limbs. It further hinders their ability to survive.
However, bionics as a field has stepped up to the plate. I've heard of everything from a turtle being given new fins, to dolphin getting a new tail, to an eagle getting a new beak, to a cockatoo having its entire legs replaced.
Perhaps people feel that it's silly to expend so much effort on an animal, but it's good practice for us humans, who also lose body parts at a larger rate than we'd like.