They should try with perpendicular mice, probably otherwise it cancels out

If you want to be a pedant about it, that’s typically considered “assisted suicide” or “do not resuscitate”, rather than “killing” which is a bit different.

Not in common law countries at least (except for where they have medical suicide exceptions)

Good thumbnail

You can’t consent to being killed, of course

As-CARR-unz if it’s pronounced as in Spanish