Snake vs Pollifrog
J was out looking at the pond and I came out to see what he was looking at. He said "There is a snake in the pond." And sure enough, one of the ribbon snakes had caught a pollifrog, and while we watched, left the pond with it. At least that explains why the polliwog numbers went down. We do still have at least one frog, though. And a large ribbon snake. Maybe I should just go get some feeder goldfish. :o