I have 3 inside cats and an pit bull. My dog Drako barks at birds at birds all the time and yet just today I seen a huge possum in the yard and he didn't bark at that wtf. My cats are crazy. Tiger he is usually the calm one but ever so often he gets hyper and just runs all over the house. Chloe she has some major mood swings. She will lay in my lap and every lil move I make she growls at me! Butters now that is one wild kitty! This cat will jump off the fridge and walls for fun. She'll run all 4 feet will be on the wall and jump off. she is also a very vocal cat. everything she does she has to make a sound. I love it!! 4laugh