...that the creation itself will be set free from its bondage to corruption and obtain the freedom of the glory of the children of God.
Romans 8:21 ESV

Some people will use Romans 8:19-21 to support a belief that they will be reunited with their pets in heaven or the new earth (whichever view they take of post-resurrection existence). As happy as I would be for this to be true, there doesn’t seem to be any evidence for it in Scripture, and it is logically untenable.

First, the definite article before “creation” means that it is very unlikely to refer to individual animals, but to the entirety of creation as a single entity. Second, since animals have no sin, it would seem unjust for only pets to be resurrected. However, if all animals who have ever lived are resurrected, the entire earth would be covered in them at least 100 meters deep.