First seen in 2020, this rare blue frog continues to thrive in our tiny pond. This Northern Leopard frog (Rana pipiens) is blue because it is missing the yellow pigment which would combine with a blue pigment to make the color green. Do you remember mixing these paint colors in grade school? It’s a type of albinism, not without pigment however. It just happens to be blue. It’s a rarity, 1:300,00!!!