UPDATE: Apparently this rat is not a rat but a
Pacarana, a rare and slow-moving rodent indigenous to South America. However, in the wild, (without the soap of course), they do look like they're bathing as can be seen in the second video below.
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Nothing to see here, just a RAT HAVING A SHOWER... like a human!
The rat was captured lathering it up in a bathroom sink in Peru standing up on its hind legs and washing his armpits, neck, lips, butt...