Back to this week's update.

Hooked on Milkweed
Monarchs can eat the milkweed leaf they're standing upon—without falling! How do they do it? This week, take a close-up look at larvae legs. How do a monarch caterpillar's legs help it survive?

Faded-winged monarch captured in Texas on April 7, 2011. Courtesy of Harlen Aschen

Image: Elizabeth Howard