We put in ours:
* A letter from us w/ congrats and contact info
* Copies of all vet records and vaccinations, including med name
* Pictures from the time they were born til the time they left
* Info about Hypog. and Nutri-cal
* A packet from the vet that had the 1st Heartgard pill in it
* Food
* A toy
* Copy of sales agreement/contract
I think that's it...?
