We are exploring the top 10 largest animals found in the United States, from towering land mammals to massive ocean giants.

From the common household spider to the more exotic tarantula, these eight-legged arachnids can grow to impressive sizes and possess features that are enough to make even the bravest of people shudder ...

In the United States, you can find pronghorns in the West, with the biggest populations in Wyoming. Pronghorns are herbivores that primarily eat grasses.

The national parks of the United States hold great natural wonders and complex, varied ecosystems. A new study demonstrates that human presence in the parks, including everything from visitors and ...

The federal government mostly leaves policy about the housing and treatment of farm animals to the states, but there is increasing interest in a more active federal role, perhaps through the next ...

Livestock economist David Anderson says the USDA’s initiative to protect the United States from New World Screwworms is ...

Peregrine falcons are not only the fastest animal in the United States, but also in the world. They can reach astonishingly fast speeds in their dives of 240 miles per hour.