2cat -- let me start with a disclaimer that I'm not a frog expert. However, I've noticed something with the leopard frogs here. I think they tend to leave the smaller wetlands that are likely to go anoxic during the winter, and move into the bigger lakes that do keep oxygen during the winter. I first noticed this because there is usually a good bite on big walleyes in fall in our lakes, and when we check stomach contents, they are really feeding on those frogs. Usually that happens about now, but as we have an inch of snow on the ground instead of being 60+ F as we should, who knows what is happening this year.
