My brother's friend has a dog that is deaf, mute, has three legs, is blind and is sick. The dog is very old, and scared ( more like traumatized) if you touch him, he tries his best to run away into the corner. Poor dog! I would love to just cuddle that doggie up if I could. The owners don't want to ( they won't) but do you think it is the right thing to do to put this dog down so that he won't have to suffer anymore?