What Is the State Animal of Missouri?

Why the American Bullfrog Is Missouri’s State Animal

The American bullfrog (Lithobates catesbeianus) is the official state animal of Missouri. Adopted in 1987, the designation recognizes the species’ widespread presence across the state’s ponds, lakes, rivers, and wetlands, as well as its cultural and ecological importance. Bullfrogs are large, long-lived frogs known for their deep call and role in controlling insect and small vertebrate populations. By choosing the bullfrog, Missouri highlighted a native species that connects residents to local wetlands and water resources.

Key Facts at a Glance

How the Bullfrog Became Missouri’s State Animal

In 1987, Missouri adopted the American bullfrog as its official state animal, following campaigns that emphasized the need for a native species to represent the state’s rich aquatic ecosystems. The selection process involved input from educators, conservation groups, and legislators who sought an ambassador for wetlands conservation. By highlighting a species common across much of the state, lawmakers underscored the importance of protecting ponds, streams, and marshes that support diverse wildlife. The bullfrog’s steady presence in Missouri made it a practical and meaningful choice for long-term public recognition.

Identifying the American Bullfrog

Appearance and Size

American bullfrogs are among the largest frogs in North America, with body lengths often ranging from 3.5 to 6 inches (9–15 cm), not including the hind legs, which can double that span. They typically show mottled green or brown backs with light speckles and cream or yellow underbellies. Males usually have thicker necks and darker throats, while females tend to be larger. The eyes are prominent and positioned high on the head, and the webbed hind feet are powerful for swimming.

Vocalizations and Behavior

Bullfrogs earn their name from their deep, resonant call, which resembles a bull’s low bellow and can carry over long distances across still water. Males call to establish territory and attract females during the breeding season. They are mostly nocturnal hunters, feeding on insects, small fish, crayfish, and even small amphibians. In Missouri, their activity peaks in warm months, and they remain less active during cold periods, overwintering in mud at the bottom of ponds and lakes.

Habitat and Distribution in Missouri

Across Missouri, bullfrogs inhabit slow-moving rivers, lakes, ponds, marshes, and backwater areas with abundant vegetation. They prefer warm, shallow waters with plentiful plant cover for hunting and basking. Because they rely on stable aquatic habitats, bullfrog populations serve as indicators of healthy wetlands. Conservation efforts focused on preserving and restoring riparian zones and controlling water pollution help maintain conditions favorable to bullfrogs and many other species.

Conservation Status and Threats

While American bullfrogs are widespread and currently listed as a species of least concern globally, local populations can face pressures from habitat loss, pollution, and disease. In Missouri, monitoring programs track their presence to ensure wetlands remain robust. The state’s designation of the bullfrog as the official animal reinforces the value of these environments. By protecting water quality and natural shorelines, communities support bullfrogs and the broader web of life that depends on healthy aquatic systems.

Cultural and Historical Context

The bullfrog has long appeared in regional storytelling and folklore, symbolizing the sounds of summer nights near Missouri waterways. Indigenous peoples and early settlers alike recognized the species’ distinctive call as an emblem of local wetlands. Today, the bullfrog represents the state’s natural heritage and the importance of conserving aquatic resources. Educational programs often use the species to teach schoolchildren about food webs, metamorphosis, and the interconnectedness of land and water.