I'm not really sure what is going on with my two girls, but here is the story: Tanj and Febi will be sitting on the couch with me and sometimes when my roommate tries to pick up Tanj or Febi, Tanj will lunge at Febi and try to bite her and does a small growl.

I just don't know whats going on. Also when we are outside Tanj will potty first and be ready to come back inside and she will wait for Febi to come to the stairs so that when Febi tries to past her she will growl and try to bite the back of her neck. Tanj also does this when Febi goes into sprint mode around the house. A few times this has started a fight where I needed to separate them,

but otherwise Febi pretty much ignores Tanj and pushes past her. Does anybody know what is going on???