We have a 10 week old boy lab, we are trying to set the ground rules by saying "no" and sending him to bed when he jumps up and nips us, he usually does this when he has had a chewing session with his toys and I have the impression his teeth are bothering him. This morning, there were no nips for me or my son but when my daughter appeared he started jumping and nipping her legs and pyjamas. Presumably this is normal puppy behaviour?

Yes it is normal puppy behaviour but he needs to be taught that it is unacceptable. Do a search here on the forum for PUPPY BITING and you will find several threads that should help

:)

Melody