Hi everybody, I'm new here... i posted in the dog chat forum about my puppy yuki's barking and growling problem, but i also need help on her biting... she's a bit obsessive about her ball and so when she brings it back to me for me to throw it, she nuzzles my feet and grumbles at me, telling me to take it. But, when i do, she lets go of it and immediately begins to bite my feet and growl. I tell her no bite but she does it more... Also, if i leave her in the kitchen for about 5 or 10 min., she gets mad at me for leaving when i come back and bites. I've also tried the spray bottle method but it just doesn't help. It's not a really bad problem; just supremely annoying and i don't want her to keep doing this as an adult. All my friends' puppies are so mellow and never bit anyone before... I'm so worried!