I got Max when he was 13 weeks old, and he was the only one in his litter. The only things I can think of to look out for are issues with biting and socialization. I've read that puppies learn how hard is acceptable to play bite by doing this with siblings. Siblings will let them know when bites are too hard. It hasn't been a huge issue, we've just had to be really mindful of letting Max know when the play biting is too much.
He also was initially very scared of other dogs and people. We've been socializing him a lot since he got all of his shots, and he's doing much better. Now he has to meet every dog we pass!
__________________ Love our Max!  |