I think the frogs know their and their offspring survival is better where large predator fish are less likely. In other words small bodies of water.

Pictures from my main pond summer of 2015 (before LMB were very big)

Bullfrog with fish tail hanging out of mouth

second bullfrog just a little ways further down the bank

Last edited by snrub; 03/20/18 09:57 AM.

John

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