Grayson in the country

So tonight I am doing a quick post because Grayson I can tell is adapting to his new enviroment. A few weeks ago Matt, Jason, and I were all talking in the living room and he comes in with something hanging out of his mouth. I freaked out because he had found a field mouse and was playing with him. Okay so yes we have a field behind us that is normal. This evening as I was talking to mom on the phone he brings in a HUGE FROG. Matt was yelling OMG what do we do.... hahaha! So he gets the frog and finally throws him out side. Now poor grayson is foaming at the mouth because of this frog. (needless to say it is his own fault for playing with the frog.) NOW my worry of course we are closer to the country and as soon as he brings a snake in he is DEAD! I am so terrified of those things that is my MAIN worry. Is this normal for cat's? I didn't have a camera of this frog hanging out of the mouth because I was more worried about the foam all over my carpet. hahaha!