Carnivores may be at the top of the food chain, but herbivores are often the bigger guns (or guts) on the ladder. What makes them so big?

For Weird Animal Question of the Week, I took the author's prerogative to ask how plant-eaters grow so massive on what seems—to the omnivorous human, at least—like light fare.

It's a complex business, but in a nutshell, herbivores eat a lot and are lower down on the food chain, where there is more energy available.

Take the moose, the largest of the deer species, which lives in northern regions of North America, Europe, and Asia. Its name in Algonquin, a native language of eastern North America, means "twig eater"—not exactly a majestic moniker for