Let's Be Positive

you have this bestfriend (because i know some of you don't). one night, after a call with them, a holographic screen appears in front of you. it says to kill your bestfriend before they kill you first.
tomorrow you will be meeting them, what would you do?

I've looked everywhere online but can find a thing, so hopefully someone on here can help me out.
I have 3 guinea pigs, and two always fight. And they're not play fighting (atleast to my knowledge), one has seriously got injured several times and we have tried separating them, but it never helps. Right now, I'm really worred since one of them is shaking and drooling excessively..after a big fight of theirs. Is it because of the heat or something else? I'm really worried and I need a solution. My familys thinking of selling them and I don't want that to happen. Thanks.

Sorry if that didn't make sense I rushed to write this. If you don't know how to help, dont respond to this.