The bear looked deeply into Dick's eyes and began to snuffle. Dick was terrified as the bear-man sniffed first at his bearded face, then down his chest and finally at his crotch. Paralyzed from fear, he just lay still as the bear began to rub into Dick's crotch with his muzzle.
Terror changed to lust as the bearman gently nibbled at Dick's loins, soaking the front of his pants in saliva. Dick gently raised his hands to the bearman's head and began to stroke. The bearman was now grunting. Dick Morsie found the belt buckle and unfastened it, then slowly, he opened his pants.
The bearman stopped and looked into Dick's eyes again. He bent toward Dick and licked him on the mouth. Dick opened his mouth as the bearman continued to lick and soon the bearman was French kissing the scientist. Dick didn't know why he was so attracted to this animal. All he could think of was how sexy he found the powerful form now almost fully on top of him.
As they kissed, Dick eased out of his slacks and removed his underware.
His bottom half exposed, he opened his legs and began rubbing his loins against those of the bearman's.
The bearman knew what Dick wanted; the bearman wanted it himself. His huge shaft rubed against Dick and moved lower and lower toward Dicks asshole. The bearman lubricated Dick well and Dick was softly moaning as the cockhead of the beast entered him.
The bearman's instincts took over and he mated with Dick.
Dick's ass was on fire. Searing pain from being stretched by the huge bear cock buried inside of him, but there was pleasure too, the pleasure of being filled by such a wonderful beast. Dick rubbed his bearded face into the bearman's chest fur, breathing in his scent. Dick felt the bearman's hot, wet explosion inside of him and in his own orgasm realized something... he'd just been contaminated. Fear gripped his heart as he felt the warm tingle in his guts start spreading.
Dick felt his body expanding and felt the itch of new fur starting to cover his body.
The bearman, satisfied, grunted and collapsed on top of Dick. The bearman snoozed and Dick was trapped benath the great beastman. Dick lay helpless beneath his new mate and felt his body shifting into his new ursine form. Small consolation was the realization that his cock was erect and growing larger as were his balls.