Moeritherium
The Moeritherium (‘the beast from Lake Moeris’) species were pig-like animals that lived about 37-35 million years ago during the Eocene epoch, and resembled modern tapirs or pygmy hippopotamuses (however, they are not believed to be related to either of those animals). These prehistoric mammals are related to the elephant and, more distantly, the sea cow. M. lyonsi was smaller than most or all later proboscideans, standing only 2.3 ft high at the shoulder and weighing 518 lbs. The shape of their teeth suggests that they ate soft water vegetation.