We have a gorgeous 13 months old chihuahua x jrt. She is a perfect dog except she is quite nippy. She mouths at your hands when she wants to play and she can be very protective of me and nip at the children (never hard) if she thinks they are attacking me (4 yo ds2 in particular if he's being boisterous).
Is this just to be expected with a tiny dog or is there a way of training her to stop doing this. 90% of the time she is a cuddly lap dog and very gentle.