I remember when Spencer was born. He wasn't breathing and it really scared me and Joe. We rubbed and rubbed him to try to stimulate his breathing. That didn't work so we finally got Sophie's attention and she started licking him. He then started to breathe. I really didn't think he would make it but he soon caught and surpassed his litter mates.
As you can see he is very attentive to his new brother. They will be sure to send more pictures as the two "boys" grow up together. I think that is a good thing.