Episodically aggressive 6 month Boxer puppy
by Amy C.
My little girl is having occasional episodes of extreme aggression. She has two Chihuahua brothers with whom she gets along great, until she tries to steal their chew toys. I've started crating her when I give them theirs because she practically eats hers and it reduces the tension. However, today she became aggressive towards me with no identifiable triggers present. I've physically subdued her and bitten her ear per the advice of others, but not only is she immune to the pain, it doesn't stop the behavior. (I've done it twice before.) She snarled and tried to bite me twice more. I bear-hugged her and carried her to the crate until she calmed down.
I'm perplexed. She's such a sweet and beautiful girl, and she's so smart. I'm worried, though, that she might hurt my little guys at some point or that her aggression towards me might turn towards someone else. She's already 45 pounds and growing. At some point, she'll potentially be stronger than I. I need to nip this in the bud, but I've no idea how to do so or why it's become an issue.
Any insight would be appreciated!