That sounds like normal behavior for a 11 wk old pup. They use their mouths alot at that age so they have the nickname "landsharks". When Missy starts to put her teeth on anyone they need to yelp loudly and give her one of her toys to put in her mouth. I would also say NO bite and then give her her toy.
karen, mom to:
ace-gsd (bi-color) 6/14/2010
mandy-yellow lab 1/31/2009
baby-terrier mix (waiting at the bridge)