Back when I was in college while summer interning with the PAFBC we were electro shocking a small but popular limestone in the State College area know for having a lot of large trout in the usual places. While shocking one particular pool we bubbled up 5 wild browns at or above 20" in length, one of them being 25". While measuring and weighing the fish it coughed up a 3' snake. I mean this thing was huge. It had been in there a long time as it was pretty digested. Bummer cause that was quite the meal gone to waste.
That is the first frog I've seen though. Super cool.