Many believers in the doctrine of resurrection, including many Mormons, assume that only human beings will be resurrected.   That does not seem to be the belief of these Mormon prophets and apostles.

John saw beings there [in heaven] of a thousand forms, 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.   The grand secret was to show John what there was in heaven.   John learned that God glorified himself by saving all that his hands had made, whether beasts, fowls, fishes or men; and he will glorify himself with them.

Says one, "I cannot believe in the salvation of beasts."   Any man who would tell you that this could not be, would tell you that the revelations are not true.   John heard the words of the beasts giving glory to God, and understood them.   God who made the beasts could understand every language spoken by them.   The four beasts were four of the most noble animals that had filled the measure of their creation, and had been saved from other worlds, because they were perfect: they were like angels in their sphere.   We are not told where they came from, and I do not know; but they were seen and heard by John praising and glorifying God. [See Rev.4:6] - - General Conference held on the floor of the Nauvoo Temple, April 8, 1843 HC 5:343-44, cited in McConkie, Mormon Doctrine 1st ed p 578, and in Teachings of the Prophet Joseph Smith 345-346

Animals do have spirits and that through the redemption made by our Savior they will come forth in the resurrection, to enjoy the blessing of immortal life. - "Answers to Gospel Questions" Volume 2, Page 48

Nothing is more absolutely universal than the resurrection.   Every living thing and being will be resurrected. "As in Adam all die, even so in Christ shall all be made alive."   (1 Cor. 15:22.)....

Just as the creative and redemptive powers of Christ extend to the earth and all things thereon, as also to the infinite expanse of worlds in immensity, so the power of the resurrection is universal in scope.   Man, the earth, and all life thereon will come forth in the resurrection.   And the resurrection applies to and is going on in other worlds and other galaxies.

Thus saith the Lord:   "And the end shall come, and the heaven and the earth shall be consumed and pass away, and there shall be a new heaven and a new earth.   For all old things shall pass away, and all things shall become new, even the heaven and the earth, and all the fulness thereof, both men and beasts, the fowls of the air, and the fishes of the sea;   And not one hair, neither mote, shall be lost, for it is the workmanship of mine hand."   (D. & C. 29:23-25.) - Mormon Doctrine 1st ed 573-578, 2nd ed 642-643

He made the tadpole and the ape, the lion and the elephant but He did not make them in His own image, nor endow them with Godlike reason and intelligence.   Nevertheless, the whole animal creation will be perfected and perpetuated in the Hereafter, each class in its 'distinct order or sphere,' and will enjoy 'eternal felicity.'   That fact has been made plain in this dispensation (D&C 77:3). - Church First Presidency Message, Christmas greetings, Dec. 18, 1909

The Lord created all things for a purpose.   Nothing has he created to be destroyed, but that all things might endure forever...   The Lord intends to save, not only the earth and the heavens, not only man who dwells upon the earth, but all things which he has created.   The animals, the fishes of the sea, the fowls of the air, as well as man, are to be re-created, or renewed, through the resurrection, for they too are living souls. - General Conference, October 1928

Every creature has a spirit, and that it existed in the spirit before it was on the earth; the spirit of every creature is in the form of its temporal, or mortal, body.   Since this is true, and all forms of life partook of the effects of Adam's fall, therefore they are entitled to the resurrection and shall live again.   "And not one hair, neither mote, shall be lost for it is the workmanship of mine hand," said the Lord. (D. & C. 29:25.)   Likewise the earth, which is a living body, must die "in like manner" as to all other mortal things, and then receive the resurrection. (Isa. 51:6.)   The fact that the spirit of every animal, every fish, every fowl of the air, is in the likeness of its body, and that also it was created in the spirit in the beginning, is a contradiction of these unscientific theories which man has inflicted upon a fallen world.   "Church History and Modern Revelation", Published by The Council of The Twelve Apostles of The Church of Jesus Christ of Latter-Day Saints, 1946.

"I can only tell you what the scriptures say about it," Daddy replied.   "Usually, when we talk about the resurrection, we think of people.   But the scriptures teach us that man, the earth, and all the life upon it will be resurrected, mentioning especially the beasts, the fowls of the air, and the fishes of the sea.   The Savior gave His life so that everything would rise from the dead, even lizards and robins." - "Will Robins Go to Heaven?" - Church Friend, Apr. 1982, p. 39

A number of questions immediately arise, of course.

• If all animal life will be resurrected, then heaven will be populated not only with our pet dogs, our ponies, and the robins whose song we enjoy, but also the flies, the gnats, the bats, the rats, the tapeworms, the sharks, the amoebas, even the bacteria - all the millions of species, each with its millions of individuals that have existed since the beginning of life on earth.   Does that really sound like a heaven where one would want to be?

• Will the many chickens, hogs, steers, and trout whose parts have nourished me by passing through my digestive system receive "new bodies," or will their resurrected life be in a body reconstituted from that body which I and my table-mates partly utilized as energy and partly sent to the sewer system as waste?

• Predatory animals by their very nature prey upon other animals.   For them, "eternal felicity" would be to be able to continue their predation.   But what about the "eternal felicity" of their prey?   A shark is an efficient hunter and eater of flesh, as are most predatory animals.   The alleged "Intelligent Designer" did a good job in designing a killing machine.   Can a shark (or a lion, or an alligator) be a happy eater of foliage?

• Of course I would perhaps like to have my beloved dogs in heaven with me, but over the years I have had quite a few. I wouldn't want that many dogs living with me here on earth - why would I want so many in heaven?

• What about the dinosaurs, the wooly mammoths, who are very large?   Will there be enough room in heaven for the billions of creatures that have wandered the earth during the millions of years since life began here (every thing that ever lived!)?

• Which kingdom of heaven will the animals be assigned to (the celestial, terrestrial, or telestial)?   One would assume that pets will go with their former owner, wherever the owner ends up.   But is that fair to the pets, to base their eternal placement on the actions of their owner?   And what about non-domestic animals?   Of course in the top kingdoms we would like pleasant animals such as songbirds.   Will cockroaches all be sent to the lowest kingdom?