I had the good fortune to spend the past weekend camping in Newhalem. My son plucked this little fellow out of the Skagit River. He's a tailed frog, an amazing little creature that lives in rushing mountain streams. The tadpoles have suction cups to hold on to rocks. The tail is how I can tell it's a male. It's not really a tail but a reproductive structure. They fertilize internally, then the female lays the eggs.