Yeah they will ‘nip’ with their little needle teeth. It’s how they play with litter mates and also due to teething.I know little about puppies. Is it normal for them to bite? Or could that be the reason Bertie was returned from his last home?
A puppy that’s been with it’s litter and Mum for 8 weeks will generally have better ‘manners’ and can be less mouthy, as the Mum dog would let them know when enough is enough. Part of the reason they should stay until 8 weeks.
This is all good info for when you get Ian!!