But X-ray scans have revealed this grapefruit-sized lump is actually a 30,000-year-old mummified ground squirrel from the Ice Age.
A ground squirrel for the agesAn illustration of the mummified ground squirrel curled up in its burrow during hibernation.
"I study bones all the time and they're exciting, they're really neat.
Wolfgang Kaehler/LightRocket via Getty Images"Some people get really, really excited when they find that giant woolly mammoth leg or, you know, the big tusks or the big skulls.
But for me, the Arctic ground squirrel fossils, the nests, and now this mummified squirrel, are really the coolest things that we do have.