Question: Do dead believers become angels in Heaven?
Confusion on this could come from Matthew 22:30 and Mark 12:25. The former says, For in the resurrection they neither marry nor are given in marriage, but are like angels in heaven. This verse, however, doesn’t mean that humans become angels but rather that, like angels, humanity is not bound by marital relationships in Heaven.
No, nothing in Scripture indicates that humans become angels. Angels are an entirely different race of being and we should be thankful to be human because, despite the fact that both men and angels fell, the Lord only provided a redeemer to humans (Hebrews 2:16).
Question: Will Animals Be in Heaven?
Isaiah 65:25 seems to indicate animals will be present on the new Earth. Revelation 19:14 pictures the armies of heaven seated on white horses.
It seems that animals are part of life in Heaven. Whether or not it will be your animal Scripture doesn’t indicate. Suffice it to say that our Lord is regularly surprising in the ways He is gracious to us. It shouldn’t surprise us if regaining a loved pet is part of Heaven. However, if it is not then we trust we will be perfectly happy regardless.