I recently added two cats to our household, (3 weeks) They are healthy and playful....I already have two cats..about 8 and 10 months old. My beige tabby has been acting weird since we got the new additions and I am starting to get concerned. She is not playful, sleeps alot, she will not eat with them, but will eat and drink alone. she is pooping and peeing fine. she will cuddle and purr a little but then growls and runs off. Before we got the ohter two cats she was playful and ran around like a little nut. She played with the other cat and now she wants nothing to do with her. I am getting concerned any advice?