Meet the record holders of the animal world, including the planet’s largest, smallest, fastest, and slowest animals, as well as the most toxic, most dangerous, and even the brainiest. (Source: National Geographic Wild)
Episode Info
One of the longest land animal migrations is that of the wildebeest. Their deadly river crossings combined with exhaustion, thirst and predation cause the deaths of some 250,000 wildebeest on a 500 mile migration each year.