I dont have 2 pups from the same litter but they have the same father and are a month apart in age and I got them both when they were pups, they are very close like they are siblings though, I would seriously be concerned about either one of them if something happened to the other one. I have cats from the same litter and you can tell they will clean each other and lay by one another and play together it is cute, Ive really enjoyed both the yorkie pups together experience and the cat sibling exoerience and now I will always have siblings if I ever get dogs again or cats |