Natural History: The Bullfrog is an introduced species in the Presidio and is detrimental to native species.
General Distribution: This species can be found in ponds and streams and has been sighted at Mountain Lake.
Frequency: The Bullfrog is uncommon within the Presidio.
Identifying Characteristics: This is a large frog (9 - 20 cm). It has an olive, green, or brown body with dark bands on its legs. Its underside is a white-gray. It has a conspicuous eardrum with a fold of skin above.
Did You Know?
In 1872, there was a proposal in Congress for the Presidio to become a San Francisco city park. The Army reported that 800 acres were required for national defense, provided barracks be relocated. Despite Congressman Cole's attempts, however, the Presidio reservation remained intact.