Haha, you made me laugh quite a bit, like ethical due diligence was even a bleep in the mental model of someone who talks like that about sentiment life forms.
You know, the ones swallowed head first and alive and then drown in stomach acid, the ones you can buy in pet any store?
Also worth mentioning in district of Columbia and a few other places is illegal to sell live animals including mice, so there is some effort to do better about our behavior towards other living beings, unlike you.
Real talk, torturing animals is a hallmark of sociopaths. You should really seek professional help, and I say this 100% seriously.