Originally Posted By: Silent HunterCold is a relative term, 30 degrees in the south and if our 'northern Canadian' friends answer probably -30 degrees.
Just my $.02.
I think you hit the nail on the head. It doesn't get below 28 down here very much, and it doesn't stay there for long when it does, usually just a matter of hours. I have walked up on rabbits at night when it's that cold that I could have stepped on. I think the predators don't move because the prey isn't moving. I believe they both instinctively know it'll be warmer in the morning, and they wait until then to move and hunt.