This is a race between a 'full belly' or a 'full life'!!! Even though the deer is the cougar's staple food supply, the cougar misses more than he scores...Otherwise, no deer - or overweight cougars, and how many fat cougars have you seen? So, even though this race looks like a 'toss-up', I'd put money on the buck. He didn't reach maturity by losing races to cougars!!!