I’m not an expert when it comes to hop frogs, but I thought it was a bit unusual to see a hop frog hopping about at North Beach in the middle of November.
Frogs usually hibernate in the mud, and toads hibernate generally by burrowing intro the ground. In the fall, their respiration and circulation gradually lessen and they become more lethargic.
Northern leopard frogs, bullfrogs, green frogs and mink frogs avoid freezing throughout winter by hibernating underwater in water bodies that are deep enough to prevent freezing solid. Amphibians breathe through both their skin and their lungs. When they bury themselves in the mud under a pond, their skin is able to obtain enough oxygen in their lethargic state to keep them alive until temperatures warm up again in the spring.
Gray treefrogs, spring peepers and wood frogs hibernate under leaf litter, logs or rocks, and can survive freezing by increasing the amount of glucose in their organs. The small volume of water remaining in the frog’s body freezes, but the glucose, a cryoprotectant, does not.
Images by Katherine © 2012 CKB