If I have a zapped pet and make him chibi, but then decide I want a...whatever, golden telenine, can I? I mean using a potion on him, will it show the transformed pet? I remember I tried it once and got a big X instead of a pet, but I think it's fixed now, right?
I'm not super sure what you were asking. Did you mean that if a zapped experiment pet (which you also turned into chibi) can be potioned to other pets? They can be potioned to whatever pet as long as those pets exist.

Yes, you can definitely do that! The only reason it might not have worked before is because some pets are still missing certain colours. That's happened to me before, only it was a zapper glitch. Your pet will change into whatever pet and species you pick. If you want to make sure it exists before you change it, you can check here.
Yes, that's what I was asking :D Sorry, english not my 1st language :/ Thanks for answering :)
Super, thanks much! :)