What type of frog is this?

Ok so this is a little weird but my moms friend went on a fishing trip, and brought her a frog, to eat. It sounds weird and I promise you I don't eat them but my parents like them. Anyways so when I saw it it was still kind of breathing, and it's eyes opened and closed. I was freaked and i let it outside in a mossy patch and i watered it every few seconds. Anyway I'm not sure what to do! I want to know what kind it is but I'm not sure. It has red eyes and it's not a red-eyed tree frog, because it's bigger and not as green. My sister says it might have had a popped blood vessel and that could be why. It looks like a toad but i don't think it is because it's skin isn't warty, it's smooth. It's really big, about 3 by 5 inches. It is a darkish green kind of a swampy color it has a kind of swirly design on it's back, that's a darker green. I'm really worried because when they caught it, i think they damaged it's arm so he can't jump, just move around, lagging it's arm. It was found in Kansas City, Missouri, at Smithville Lake. We're probably going to take it back soon, but I don't know what to do with it now. Please help! Tell where you got the information if you can! Hope this is enough info!