This photo is from Big Cats Pictures
<p>Photo: A lion walking through grasses</p>

Big Cats Initiative

Photograph by Beverly Joubert

An adult male lion walks through grasslands in Botswana's Okavango Delta. Biologists think males evolved their impressive manes in part to provide neck protection during fights, among other reasons.

Big Cats Initiative

National Geographic is working to avert the extinction of lions, cheetahs, and other big cats with the Big Cats Initiative, a comprehensive program that supports innovative projects. Learn how you can help save these animals.