Quick answer
The American bullfrog is the largest frog native to North America, reaching up to 20 cm (8 in) long and weighing around 0.5 kg (1.1 lb). Named for the deep, resonant call of breeding males, it is a voracious ambush predator that will eat almost anything it can swallow. Bullfrogs typically live 7 to 9 years in the wild.
Key takeaway
The American bullfrog is the largest frog native to North America, reaching up to 20 cm (8 in) long and weighing around 0.5 kg (1.1 lb). Named for the deep, resonant call of breeding males, it is a voracious ambush predator that will eat almost anything it can swallow. Bullfrogs typically live 7 to 9 years in the wild.
Overview
The American bullfrog is the largest frog native to North America, reaching up to 20 cm (8 in) long and weighing around 0.5 kg (1.1 lb). Named for the deep, resonant call of breeding males, it is a voracious ambush predator that will eat almost anything it can swallow. Bullfrogs typically live 7 to 9 years in the wild.
Biology
American Bullfrog (Lithobates catesbeianus) is classified as Amphibian with conservation status Least Concern. Typical weight Up to 0.5 kg (1.1 lb); lifespan around 7–9 years in the wild.
Ecology
Diet: Carnivore (insects, fish, small vertebrates). Habitat: Ponds, lakes, marshes, slow streams. Movement and social systems reflect those pressures.
People and this species
Learn before you travel or keep related pets. Wild individuals are not toys; captive care needs species-specific husbandry.
Further reading
See the full American Bullfrog profile for FAQs, taxonomy, and related guides on this site.
Behavior and calls
Male bullfrogs are best known for their loud, low-pitched 'jug-o-rum' call, used to defend territory and attract mates during the warm breeding season. They are mostly active at night and spend the day floating among vegetation or resting at the water's edge. Bullfrogs are powerful jumpers and strong swimmers, diving quickly when threatened.
Diet and feeding
Bullfrogs are sit-and-wait ambush predators with enormous appetites. They eat insects, worms, fish, crayfish, small snakes, rodents, and even other frogs, lunging with a sticky tongue and swallowing prey whole. If it moves and fits in their mouth, a bullfrog will usually try to eat it.
Habitat and range
Native to eastern and central North America, the American bullfrog lives in warm, still or slow-moving freshwater such as ponds, lakes, and marshes. It has been introduced to many regions worldwide, where it often becomes an invasive species. Tadpoles can take one to two years to fully transform into adults.
Conservation
The American bullfrog is listed as Least Concern and remains abundant across its native range. Outside North America, however, introduced bullfrogs threaten native amphibians by preying on them and spreading disease. In its homeland it is hunted both for sport and for its edible legs.
Research notes
Figures for american bullfrogs (Lithobates catesbeianus) come from field studies, museum records, and conservation assessments that do not always agree on exact averages. Prefer ranges over single-point claims, and check whether a source describes wild, captive, or mixed populations.
Practical takeaways
If you encounter american bullfrogs in the wild, prioritise distance and local guidance. If you care for related domestic or captive animals, match diet and housing to species needs rather than generic pet advice. Share accurate status information (Least Concern) when discussing conservation.
Sources
FAQs
American Bullfrog: Key Facts & Natural History?
The American bullfrog is the largest frog native to North America, reaching up to 20 cm (8 in) long and weighing around 0.5 kg (1.1 lb). Named for the deep, resonant call of breeding males, it is a voracious ambush predator that will eat almost anything it can swallow. Bullfrogs typically live 7 to 9 years in the wild.
What is the scientific name of the american bullfrog?
Lithobates catesbeianus
What do american bullfrogs eat?
Carnivore (insects, fish, small vertebrates)
Where do american bullfrogs live?
Ponds, lakes, marshes, slow streams
Are american bullfrogs endangered?
Listed here as Least Concern. Check IUCN and national lists for the latest assessment.