Bubba (the beagle) is convinced squirrel's are evil. I remember at one park they literally seemed to be throwing nuts down at him from the trees (probably just dropping them in excitement). The chances of him actual catching one are astronomical, but that doesn't seem to intrude on his convictions.
Tux (Lab-mix) is his buddy. I suspect Tux is much smarter, but all that goes down the drain when they are together. Together their collective intelligence drops (like when men gather) and thoughts go to:
Look at me pee! Hah! Look at ME pee!