06/06/2026
Few sounds say "summer in Wisconsin" quite like the low, booming call of an American bullfrog drifting across the water at dusk. 🐸🌅
If that familiar chorus has started up near your pond or wetland, breeding season is underway. American bullfrogs (Lithobates catesbeianus) call primarily to attract mates and defend their territories.
Only the males call, producing their deep, bass-heavy "jug-o-rum" sound by forcing air between their lungs and a large vocal sac.
📸 Frog: Wisconsin DNR
📸Landscape: David Hoefler via Unsplash