ECOVIEWS Our largest frog, the iconic American bullfrog, is a native throughout the eastern United States (except for southern Florida and most of the Okefenokee Swamp) and into southern Canada.

However, the weird and upsetting sound made by the bullfrog in this video from Mark Roe’s YouTube channel is far from the usual baritone mooing. Why do bullfrogs scream like that? And how do ...

Now, with added pressure from nonnative fish and bullfrog predation, habitat destruction ... In the early to mid-1800s, the human population increased significantly in southern Arizona, New Mexico, ...