Ben and the Missing Pony, paperback
When Ben and C.W. discover an injured pony, they feed it, and bandage its wounds. Then they hide the horse in an old abandoned barn and decide to keep it.
But when the two friends discover the horse is a Heritage Horse of Oklahoma and probably stolen, they must make a decision.
Will they keep the horse hidden, even though his wounds are not healing?
Or will the do what is best for the horse?