Sated, the grizzly trudged down to the stream after gorging on a three day old kill. Oh, those elk are so good (to a bear) when you let them marinate in their own juices like that... Anyway, he had to wash it down with something before curling up for a snooze.
There was an odd scent to the water, but nothing unusual since those two-leggers were digging a den of some kind up the canyon last year.
He dimly remembered the scurrying of those pink things in and out since then. Cold water hitting his belly pushed those memories from his mind as he slaked his thirst.
Finally, he trudged off to curl up in a hollow under a bush. It was a good location where he could scent if campers were near and if they had food. His dreams of raiding campsites grew strange and more detailed, with flashes of.. color?.. he hadnt seen since he nibbled small mushrooms the red two-leggers look for.
With a grunt of fear, he sat up when he realized he could understand the human voices in his memories. He stared in shock as his fur twitched like he had ants under his skin. Strange things were happening to his bones as they knitted and reshaped quite painfully.
His hips snapped and reoriented to bipedal walking as his hindlegs stretched, paws shaping to something like.. huu-man feet?
Crackling from his forepaws painfully drew his attention as his pawpad widened and the five toes on both stretched into wickedly taloned fingers and thumbs.
As the change finished, he was stunned by the information carried by the virus working on his mind. filling it to bursting with the hows and whys of being a human. The info meant to keep a human's mind funtional while changed worked in the bear's favor as he suddenly knew he was a "Bear, Grizzly".
A quick check showed he still had what counted to a male bear, though his sheath looked a little odd, shifted for bipedal comfort.
Looking in a discarded mirror showed his eyes were lighter colored, and not as small as they had been, while his headfur was longer on top than it had been.
As he puzzled quite intently on his pleasing new looks, he suddenly heard snapping in the brush behind him. Turning quickly, he found...