(Phrynobatrachus sandersoni)
Phrynobatrachus sandersoni (common name: Sanderson's hook frog) is a species of frog in the family Phrynobatrachidae. It is found in southwestern Cameroon and in Equatorial Guinea, including the island of Bioko. It is named for Ivan T. Sanderson, a British naturalist and explorer, and later on, author and television commentator.