QUESTION
Do you know in scripture where it supports that pets and animals will be in heaven?

ANSWER
I know of no Scripture that suggest that pets or animals will be in heaven. Animals are real in Scripture as well as often used as metaphors. So one has to be careful to build a theology around a metaphor as something that is factual. So when Scripture says that outside the New Jerusalem there are dogs (Rev. 22.15) the author is not referring to real dogs. This is a metaphor as shown by who these “dogs” are.