God has a special reason and place for each of His created beings. Animals, too, have a purpose in God's creation. Man, as the highest order of creation, has been given dominion over the animal kingdom (Genesis 1:26-28).
We believe that animals were intended for man's enjoyment and use. The Bible itself does not indicate that there is life after death for animals. It may be that God's purpose for animals is fulfilled on this earth. However, if animals would make us happier in heaven, surely there will be a place for them there.
Some Bible interpreters have called attention to Isaiah's description of the peace of God's future kingdom where he says that "the wolf and the lamb will feed together, and the lion will eat straw like the ox" (Isaiah 65:25). Heaven will lack nothing that is good and that will bring glory to God.