Diet has always been a big issue. And forever will be. Some PEOPLE don't think greasy hamburgers are very healthy, yet others eat nothing but greasy hamburgers. In the wild, the main part of a horned frogs diet is other frogs, then insects, then mice and anything else it can fit in its mouth. I have seen a small horned frog eat a horned frog that was twice as big as it was. Feed your horned frog crickets, it will live. Feed it mice, it will live. Feed it rats 5 times the size of it, it will live. Food is food. Vertebrates are much harder to digest than insects, thats for sure.