Teleoceras major, the corgi-shaped rhinoceros from the Miocene of Nebraska, and a modern hippopotamus for comparison.
Teleoceras was apparently a rhino version of hippo, but it's so barrel-shaped and short-legged that it makes actual hippoes look quite athletic. It's known from hundreds or perfectly preserved skeletons known as the Ashfall Fossil Beds.
12 million years ago, a volcano erupted, and tons and tons of fine volcanic ash and dust was blown to the area where herds of Teleoceras lived. Fine shards of volcanic glass filled their lungs and soon, whole herds died and were buried into the endless ash. The animals still lie in the position they died in: on their stomachs or sides, some calves still in nursing position.
The title refers to an alternate explanation I came up with when submitting this to the graphics competition of a computer festival. To the nerds, I explained she's a time travelling secret agent rhinoceros that was sent to find out how life is in the Antropocene. As all the modern rhinos just laughed at her stubby legs, she went and seduced herself a male hippopotamus (pictured), who still hasn't realized there's something weird about the newest addition to his harem.
Photoshop trying to look like watercolor.