For the record, in all the 30 years we have been camping, we have encountered bears twice. Once when a careless camper in our group left apples on a table and once during the night. It's a pretty good indication of a bear in the campsite when you wake up in the middle of the night to a symphony of pots and pans being hit by spoons echoing through the forest.
We have yet to encounter snakes, although I do not venture outside the tent after dark for any reason.
We have encountered more snakes, deer, foxes, coyotes, wild turkeys, rabbits, moles, squirrels withing 2 miles of our house on the American River Trail than we've ever seen while camping.