Should putting down an animal have euphemisms?

Yes, because putting down an animal can have a very strong emotional impact. If you say 'put to sleep' for example, it sounds better because you can tell that you want the animal to die peacefully and without pain. Saying 'kill' makes it sound like you just want the animal dead. Personally, I usually prefer to say 'kill', because 'put down' just means the same thing. Yes, I am against euthanasia. Here are some euphemisms you can use, but you can also make up your own: put down, put to sleep, put out of misery, and lay down. I hope this helps!