Other than frogs I have purposely tossed into the water, I have never seen a bass eat a frog. I am not saying they don't, but with the hundreds of hours I have spent on the water I figured I'd have seen that by now. I did have a smallie cough up a leopard frog once when I got it in the boat. I don't think having frogs around your pond is a bad thing, but in the end I doubt they add much than 1% or less of the forage percentage of bass in a pond even in ponds chock full of frog habitat and frogs.
I did fish a small 18 acre natural pond as a kid that had tons of frogs. I do know the bass loved nailing the frogs as on occasion the lily pads would explode and the frog would come up missing.
The pond had stunted overpopulated bluegills but that didn't stop the bass from going after the frogs.
The frogs were dynamite as bait as well on the 18 acre pond, and the adjacent lake that was 35 acres.
