I'm sure I did weigh in on it, I usually do when this topic arises...but if you prove to the world that I contradicted myself, I'm sending my five cats in full ninja gear to Michigan...:p
Theo, I'm truly not one of those who believe Fluffy will be in heaven because if she isn't then God's just a big ole meanie. Actually, I was raised to believe that animals will not take part in the resurrection, and have changed my mind strictly due to studying the issue in the scriptures, not because I'm just a big sentimental softy!
Animals do have souls, or rather animals are souls...simply checking into the Hebrew word for soul and seeing that it is the word used when creating the beasts proves that beyond any question.
As to whether or not the making of man in the image of God means that man has a spirit, there are many who will argue that point...but I don't see as germane to this issue. The resurrection is the rejoining of the body and soul at the end of time.
The animals, were created to be eternal. If God created them for death, then death did not enter the world through sin, something we know isn't true. Death is the curse of sin, yet the animals are innocent of sin. If the animals do not share in the resurrection, to me, this gives rise to the final victory of death over innocence, something that I think Jesus took care of on the cross.
So many people seem to think that if God made man in His own image, that somehow negates the fact that animals have souls, animals are innocent of sin, and animals were created to live eternally just as man was. I don't see that at all.