Mo. Rev. Stat. § 10.170
10.170 State amphibian — North American bullfrog.
10.170. State amphibian — North American bullfrog. — The North American Bullfrog, scientifically designated as Rana catesbeiana , is selected for and shall be known as the official amphibian of the state of Missouri.
(L. 2005 H.B. 33)