My partner and I have an 11 week old puppy who generally is very good, we've crate trained, she knows the sit, come and paw commands all of which she didn't know when we got her 5 days ago. The problem we're having is we have 5 cats and when Tori (our puppy) wants them to play with her she barks. Obviously we don't want to encourage her to bark at the cats (they are far from appreciative) so far we've been saying no everytime she barks in a firm voice. Is that the right thing to do? Or should we ignore her barking like we do when she whines?