Purportedly MadeBig.com, citing BFRO, probably Bigfoot Field Research Organization, which is claiming to be down for me right now.

MadeBig: Large source image
Caption on that image is PABucks.com, which has images. I saved images in case sources dry up. One at PABucks.com does look like four-legged animal and skinny bear would seem more likely than fanciful hairy humanoid primate with large feet.

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