This is a very confusing post because, first of all, I have no idea why it is called "Our pets in heaven." Do you believe that animals have an eternal soul?
If so, would you give your Scriptural backing to that idea?
Furthermore, the word 'should' implies necessity. (e.g.
"Im not sure whether I should do it") Thus, it sounds like you are posing a moral dilemma. If we are discussing right vs wrong on a particular subject, I'm uncertain what Scripture you are wanting to discuss about such a matter, or rather, what sin are you referring to concerning what you "should" do?