McNamara M C, Riedesel M L
Science. 1973 Jan 5;179(4068):92-4. doi: 10.1126/science.179.4068.92.
Squirrels learned to escape from a water bath by making a visual discrimination. Twenty-four hours after reaching criterion for learned behavior, the animals were exposed to the first of two 11-day cold exposures. The animals that hibernated had better retention of the learned behavior.
