So, I have 22 pets. two of those from the loyalty boxes. Now, I can never remember if I buy a MMP for another slot, will it work?

I believe 22 pets is the max.

Not technically anymore.

You can only get another pet with a loyalty box. c: The MMP won't work because those only go up to 22 slots (20 for most users). But when you get your next loyalty box you can get another slot with it. c:

Heck :( Alright, thanks people :D