• East view from Crissy Field overlook with old Coast Guard station on left and city on right

    Presidio of San Francisco



North American Bullfrog
A North American Bullfrog similar to what might be found at the Presidio.
© Twan Leenders, 2003

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.

Amphibians main page

Animals main page

Did You Know?