I have no idea on how big he'll be, but OH MY!! SO cute!! Our youngest puppy was a mutt (rescue, so who knows who her parents were) and we thought she'd end up being much bigger than she is, but she topped off her growth shorty after we got her (I think she was about 3 months old).
I don't have any kids so I love these kids!
It calms him just like a paci does a baby. He's doing it right now. I love watching it!!