Several cats make their daily route across our backyard and every now and then Bella spots them if she isn't sleeping. Her natural instincts kick in and she charges towards the back door so that she can get the chance to either catch or scare off the intruder.
One time, Bella was sitting on top of me for whatever reason when she saw a kitty walk past the window. She went completely ape sh*t and ran after it, using my stomach as her launching pad. It felt as if I was getting punched hundreds of times.
This is the first time that a feline has ever stuck around long enough for Bella to bark at it. Her fur even stood up! Yet another moment The Hubby would have loved to see.