Scientists imagining what alien life might look like on a planet orbiting a red dwarf star came up with "gulphogs" like these. They would stand as tall as giraffes and could be the planet's top predators. They might also be intelligent and have the capacity for social interaction.

The illustration was made for the National Geographic Channel documentary Extraterrestrial, a look at what life on other worlds might really look like. Visit the Channel's Extraterrestrial Web site for a video excerpt, more images, and an interactive feature.

Read the Related News Story: Flying Whales, Other Aliens Theorized by Scientists