Have You Seen This Guy?

We are watching our steps around here. Will's frog (who does have a name, but I can't remember how to pronounce or spell it) is missing. Will checked him on Saturday; the lid to his froggy home was up, and froggy was AWOL. He is a very low maintenance pet, and we don't check up on him too often, so we don't know how long he has been gone. We checked all the obvious places a frog on the loose might be, but how the heck does a frog escape in the first place? We have our suspicions about the cats, but it seems unlikely, as they never showed any interest in eating the frog before. I don't think they even knew he was there. The thought of a loose frog in my house is a bit unnerving. I may have a heart attack if I run into him/step on him in some unexpected place. Poor little guy. He had almost earned his freedom. We were going to return him to his natural home as soon as the weather warmed up this year.