I will humbly agree to disagree..I personally believe murder is killing anything who does not want to die. I do however believe euthanasia is necessary if suffering.

None of my chickens want to die.. that doesn't make me a murderer. It makes me human. I eat meat. None of them are suffering when I take their life. I am not euthanizing them.

https://www.law.cornell.edu/wex/murder
Definition
Murder occurs when one human being unlawfully kills another human being