It's a Cow!
Below is one of the giant tadpoles in the small ponds who is just a short time away from being a full fledged frog. As you can see this guy still has about a 2 inch tail but he has fully developed front and back legs. And he is sitting on the algae rather than in the water. A minute after this picture he hopped into the water so the back legs are already working. This is one of the tadpoles we inventoried last September so he survive the winter and the various predators that have visited the small pond since then.