so i started using my lab's first diet (as per her breeder), and it is working really really well. i immediately noticed she's gaining weight again. anyway, here's my situation: my lab puppy is 2 1/2 mos old and she likes biting (in a really harmless way) either of my hands. i guess to give you a clearer view, she just likes to put my hand inside her mouth. and i dont mind having light scratches sometimes coz it really doesnt hurt. what does this mean? is this a kind of her security blanket that she wants to know im here? or am i being superficial?