Do you think your Dog is reincarnated?
A Dog's Journey, A Dog's Purpose, The Dogs Of Christmas by Bruce Cameron are all fabulous books about wonderful dogs.
The first two books tell about each Dog's journey through multiple lives and the animal soul contracts (ie the reasons) for those incarnations.
If you think YOUR pet is reincarnated or you want to learn more about animal life after death and pet reincarnation
Brent Atwater's book
Animal Reincarnation -Answers for all your heart's Questions teaches you about animal life after death, the reasons a pet reincarnates, animal soul contracts, how to know if your dog is coming back after death, how to recognize them when they return and techniques that empower you to talk with them on the other side while you're waiting. It's a must read to learn about the animal reincarnation process!