What are six facts about this book?

1) The dog in the story experiences four reincarnations.

2) The puppies in the first reincarnation are feral (wild).

3) The dog is a mutt name Toby in the first story.

4) Toby gets put to sleep after being wounded in a fight.

5) Toby is reincarnated as a Golden Retriever.

6) When Toby is reincarnated the last time, he comes back as a black lab.