We've had a lot of rain recently in Northern Virginia. I went into my bathroom on the top floor of my house and was startled by a frog on the toilet (I keep the lid up). There is no way it was carried inside from the outside by a human as my bathroom is located on the backside of my house a full three floors up. The backside of my house faces numerous mature trees (and a creek) that are quite close to the house (ravens and other birds often hop from tree branches to the gutters to get fallen acorns). I believe the frog came through my roof's vent stack and thus through the toilet. I'm pretty familiar with most local species where I live because they are quite abundant in my woodsy neighborhood, but I have never had such an encounter in the 25 years I've lived in my neighborhood (to my knowledge). I wanted to confirm that this is a Cope's Gray Tree Frog.