Loveland Frog

The Loveland Frog (or Loveland Lizard) has been seen since 1955 in Ohio, Loveland. Onlookers described it as a four-foot tall humanoid with a frog-like face and skin. It walked on its hind legs before diving into rivers to avoid observation. The Shawnee Indians (who previously inhabited the Loveland area), claim to have encountered a similar creature during hunting trips. They call it the 'Shawnahooc' or 'demon of the river'. What could it be?