my brother is not at all interested in cats or dogs. One day he was on his way to work in his car, he saw a dead cat on the road. The road wasn't busy so he stopped and moved the cat to the side of the road.
Even he recognised the importance of leaving the cat somewhere the owner might find it, instead of flattened on the road. He knew how upset I would have been had it been one of my furball killing machines.
Having said that - my late cat hated my brother. He would hiss and spit at him and then run and hide until he left the house. The feelings were mutual I think.