American Bullfrog

If you are at a North Louisiana pond on a warm night and you hear what sounds like a cow mooing from the water, you have not discovered an amphibious dairy farm. You have discovered bullfrogs. Lithobates catesbeianus is the largest frog in North America, a carnivorous opportunist that will eat essentially anything that fits in its mouth, and an animal whose mating call sounds exactly like someone doing a bad impression of a cow at close range. The bullfrog is not subtle, not quiet, and not remotely apologetic about any of this. It has been doing this since before your pond existed and it will continue doing it regardless of your sleep schedule or your opinions about appropriate volumes for amphibian courtship.

The American bullfrog is native to eastern North America but has been introduced — deliberately and accidentally — to every continent except Antarctica, where it would presumably thrive if someone gave it half a chance and access to penguin chicks. In North Louisiana, bullfrogs are year-round residents of ponds, lakes, marshes, swamps, streams, and any other body of water that is shallow, warm, and contains things worth eating. They are abundant, loud, and surprisingly difficult to see despite being the size of a dinner plate, because camouflage is one of their few skills besides eating and making noise that carries half a mile.

A Few More Facts

Accessibility

Accessibility

Bullfrog observation is among the most accessible wildlife experiences in North Louisiana because the animals are both audible from a distance and predictable in their locations. A productive pond or lake edge during breeding season — May through July — produces calling males audible from a parked car with the window down, no hiking or uneven terrain required. The call locates the frogs before you see them.

Black Bayou Lake NWR near Monroe has paved accessible paths directly adjacent to wetland habitat where bullfrogs call reliably in spring and summer. The paths allow approach from a stable surface without navigating through vegetation or mud. For visitors who cannot leave the vehicle, lake access roads and bridge pull-offs over productive ponds produce bullfrog encounters at the water level without any walking.

For visitors who are blind or have low vision: the bullfrog is one of the most acoustically locatable animals in North Louisiana. The deep "jug-o-rum" call is distinctive, carries substantial distance, and locates the calling male to within a few feet when you're close. A flashlight scan at night reveals orange-red eyeshine at the water's edge, and the alarm splash when a frog enters water is audible and locating.

On a warm May evening near any productive pond, the combined calling of multiple males produces a soundscape worth experiencing on its own terms — it's substantial, textural, and genuinely loud at close range in a way that carries information even without the visual.