Otis by Loren Long

Otis is a special tractor - he loves his farm and farmer. He particularly loves he little calf in the next stall, whom he purrs to sleep with his soft motor. The two become great friends, romping in the field, leaping bales of hay, and playing ring around the rosy by Mud Pond. Then a big yellow tractor comes to the farm and replaces Otis. He is cast away to rust behind the barn until the little calf gets stuck in Mud Pond! See what happens next!