Photos by joelsartore | Out of 33 species of jerboa, the long-eared jerboa wins the award for most oddly proportioned family member. With ears that are two-thirds as long as its body, the animal has one of the largest ear-to-body ratios in the animal kingdom! As if their large ears weren’t enough, jerboas' hind legs are four times as long as their front legs, making them extremely talented at leaping. These photos were taken moscow_zoo_official. To see more species featured in the Photo Ark, follow me, joelsartore. #PhotoArk