Substrate temperatures under the stomachs of juvenile cornsnakes after feeding. Snakes were given a meal equivalent to 10% or 25% of their body mass or were not fed. The mean and 1 standard error above and below the mean are shown. Closed circles (●) are starved snakes, open circles (○) are snakes fed a meal equivalent to 10% of their body mass, and filled squares (■) are snakes fed a meal equivalent to 25% of their body mass. (a) In spring, n = 11 per group. (b) In fall, n = 12 per group.