Hi Everyone, I'm new to this site and I am in desperate need of help. I have a 1 year old lab/collie mix - Zoe and a 7 year old lab/rott mix - Rylee. Zoe is constantly attacking Rylee, biting her legs so bad she ends up limping. Both dogs will be lying down and out of nowhere Zoe jumps up and leaps on Rylee growling and biting her. I've tried to get her to stop but nothing I'm doing is working. When Zoe's not attacking Rylee she's tearing up my house. I don't know what to do. Does anyone have any ideas?

Zoe is what I would call a bully, hes also going through some ranking stages.So your job is to separate them if the younger one gets to rough, .Its to bad this wasn't done when they were small.
Protect the older one, keep the younger one busy with his own things, so he isn't bored.
Provide a crate for the older one for safety.Use gates if you have to.

Thank You. I've been keeping them seperated and things are a lot calmer. Hopefully Zoe will calm down and realize being a bully is bad.