TigerLily has a really bad habit of jumping up on people when the come over and she goes crazy and even bites people. When I tell her to get her toy, she barks and gets even more hyper. When i do that, it doesn't work because then she thinks that every time she bites me, that I will play with her which should not be the case. Sometimes she can get uncontrollably insane and bite and attack me and the only way to get her to stop is to grab her collar and tell her "no" in a serious yet not scaring tone. She does this to my other little dog Disco also but gets even more aggressive when I try to break them apart but grabbing her. Please Helppppppp.