It wasn't an animal at all - at least not a real one. It was a man in a leather dog slave get up. Jim grinned with his teeth buried deep in the screaming young man's butt cheek. The black oily liquid flowed from his mouth into the wound and over the pinned man's skin. He shuddered and became still. Jim grinned and licked the wound. His prey was now fully encased in black shininess. The blackness began to reshape Jim's prey. It's leather harness split and fell off the leather mitts exploded to reveal cat's paws. The man let out a moan and whimper in his unconscious state as his manhood was sucked into his black groin. Eight tiny teats sprouted from his abdomen. Jim licked his new mate. He bit the rubber tail sticking out of his mate's anus, and pulled it out with a loud plop. The new cat creature shuddered as the butt plug tail was extracted.
The cat's tail was growing now, and twisting and turning as it grew outward. Jim could smell the sexy scent of latex emanating from his new mate. He licks the wet slick hole, and the female cat creature moaned. Jim grinned. He felt his black rubber shealth slide, and a bright red rubber conical prick emerged dripping a silvery liquid.