Name: American Bullfrog (Lithobates catesbeianus)
Order: Frogs (Anura)
Family: True Frogs (Ranidae)
What they look like
- Largest frog in North America; 17-25cm with legs
- Light to dark green or brown with or without spots
- Eyes are golden in color and larger than their tympanums (eardrums)
- Have a fold of skin on each side from their eye down along their sides
- Legs have thick black stripes on their legs and have very large webbed feet
Where they live
- View a map of where they live
- They are an introduced species in Washington State, originally found only to the east of the Rocky Mountains
- Currently found in many low elevation areas in Washington
- Live in lakes, ponds and wetlands, generally in the water or on the shoreline
- Breeding season is spring and summer
- Females can lay up to 25,000 eggs in one mass
- Eggs can hatch within 5 days but takes the tadpoles two years to complete metamorphosis
Cool Biology Facts
- Can jump 3-6 feet! (1-2 meters)
- Have been introduced worldwide and have caused problems in many areas due to competition with local species.
- Males are territorial and will get in physical fights to defend their territory.
- Many restaurants in the US have bullfrogs on the menu and there are actual bullfrog farms to supply them!
- Are often carriers of the chytrid fungus that has been one of the major reasons for many frog species declines; however they are generally resistant to the devastating effects of the fungus.
- Their population is increasing and in many areas efforts are being made to eradicate them. View their status on the IUCN Red List of Threatened Species.