My 11 week old lab has started biting my shoes and legs extremely hard. It typically happens when she's playing with her squeak toys. She'll start running back and forth with one in her mouth and then decide to switch to my feet. She clamps down tight enough to draw blood from toes, growls, and starts pulling me. I'm not really sure what to do about this situation. First, how should I immediately respond? I've taken to trying to nudge her toward her crate or playpen while trying to free my foot from her jaws. Is that the correct thing to do? Second, should I be worried that she's displaying aggression or is this just puppy play that's going a bit too far? She's also gone after my calves and shorts a few times.
Edit: She's been an absolute nightmare tonight. I've always yelped when she bitten and it seems to work. Tonight yelping has just made her crazier. I wrote the original post while leaving her alone for a couple of minutes to cool off, so after coming back into the room she immediately started in again. This time she went for my hair while I was sitting on the couch. I yelped, she pulled hard. I yelped again, she pulled even harder and growled. I left her alone again, came back in a few minutes and nothing had changed. She's been fed 4 times, had plenty of water, played and slept most of the day, and I took her out roughly 20 minutes ago. Is she just having a bad night? Am I doing something wrong?
Edit: She's been an absolute nightmare tonight. I've always yelped when she bitten and it seems to work. Tonight yelping has just made her crazier. I wrote the original post while leaving her alone for a couple of minutes to cool off, so after coming back into the room she immediately started in again. This time she went for my hair while I was sitting on the couch. I yelped, she pulled hard. I yelped again, she pulled even harder and growled. I left her alone again, came back in a few minutes and nothing had changed. She's been fed 4 times, had plenty of water, played and slept most of the day, and I took her out roughly 20 minutes ago. Is she just having a bad night? Am I doing something wrong?