American Bullfrog

Lithobates catesbeianus

Least Concern

About American Bullfrog

Breeds in warm months, often in large, communal assemblagesVocalizes loudly, especially at nightCan leap great distances to escape predators

Size

9 - 15 cm

Weight

500 - 1000 g

Lifespan

7-9 years

Diet

insects, fish, small mammals, birds, small reptiles

Conservation Status

Status

Least Concern

Threats

habitat_loss
pollution
invasive_species

Distribution

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North America

North America • United States

Widespread throughout North America and introduced to many other parts of the world.

Detailed Characteristics

Physical Description

The American Bullfrog is a large, greenish frog with a robust, stocky body. It has a broad, flat head, large eyes, and powerful hind legs. The skin on its back is often wrinkled or folded, and males have yellow throats. It is known for its distinctive, deep call that resembles the sound of a bull bellowing, hence its name.

Behavior

American Bullfrogs are highly aquatic and prefer to stay near water. They are known for their aggressive foraging behavior and will eat almost anything they can overpower. They are solitary animals outside of the breeding season, which occurs in spring and early summer. Males are territorial and will defend their calling sites to attract females.

Activity Pattern

Active during the night (Nocturnal)

Vocalizations

The male's call is a deep, resonant 'jug-o-rum' or 'bellow' that can be heard day and night during the breeding season.