Help my Shipoo is nipping at me!

[Janie22]

Hi there i am a new member and a new mom to a 4 month old female shipoo, I have had her since she was 7weeks old, and she is nipping at me and growling at me sometimes just trying to play and sometimes because she wants to eat things i wont let her have like dryed grass, I have never had a puppy befor I have 5 cats please help I have pictures at http://www.dogster.com/?166421 thanks