JS speaks of animals in heaven, including those from other worlds.
"Discourse, 8 April 1843, as Reported by William Clayton–B," 4, The Joseph Smith Papers website, accessed March 23, 2021
Dont be afraid of being damned for not knowing the meaning of a vision or figure where God has not given a revelation or interpretation on the subject (He here read Rev. ch 5 v 11 to 13) John saw curious looking beasts in heaven, he saw every creature that was in heaven, all the beasts, fowls, & fish in heaven, actually there, giving glory to God. I suppose John saw beings there, that had been saved from ten thousand times ten thousand earths like this, strange beasts of which we have no conception <all> might be seen in heaven. John learned that God glorified himself by saving all that his hands had made whether beasts, fowl fishes or man.