Someone please help!! How do I introduce my new kitten to my three yr old cat. Ever since I came home today the cat has ignored me and has been hiding under the beds. Finally I had my husband bring her out from the bed and try to get the two cats in the same room. The kitten was fine, but my cat starting hissing at the kittten & moaning as if she was going to attack her. This is my first time with 2 cats. Will this pass? Is it safe to go to sleep tonight or will I wake up to a mangled kitten? Should I separate them? They are both females. Not sure if that helps!