Jim closed his eyes and focused on the feeling flowing into the deer. With every pulse of cum he could feel himself delve a little deeper into the deers system, his seed pushing into the deer. He could feel it slither through the animals veins, wrapping its organs in his thick black goo, making them a part of him.
Jim was moaning in pleasure now, his thick rubbery tentacles were crawling all over the deer, caressing every square inch as he continued to pump cum into it. He was attached entirely to the deer now, covering its body with his inky black skin, constantly moving and shifting. He could feel himself wrapping entirely around the deers body, it was orgasmic.
Slowly, Jim became aware that he was not only feeling his tentacles rubbing against the deer's stiff fur, but he could feel the tentacles as if they were rubbing against HIS fur. As his corruption seeped into deeper into every aspect of the animal, he became more and more in control. And as he gained more control, the more he began to think of it as his own body.
In fact, most of Jim had been absorbed into the deers body by now, he had the look of a deer covered in thick black tar. Tar that was, even now, continuing to be absorbed through every orifice. It felt to Jim as though he were crawling around just underneath the skin but still in complete control.
Jim slowly opened his new eyes, his deer's eyes, and looked around. He was amazed by the wide range of vision he could now see. His thick muzzle split his vision in the front, but he could see almost 360 degrees around himself in startling clarity. He glanced down at his new body, his new vessel, and was surprised to see a rather ordinary looking deers torso behind himself. With a thought however, he concentrated and his black ooze pulsed up through the hair follicles and formed a thin tentacle before being re-absorbed.
He grinned internally as he flicked his new tail, he could feel every hair on it shift as it swished back and forth through the air. He stomped his hooves and could feel the soft ground squish beneath them. He was distracted however, as as deep rumbling from his stomach heralded the rise of a deep hunger inside of him. Apparently, absorbing himself into another animal took an awful lot of energy, and he could feel a need to feast rising in himself.
With a sudden leap Jim bounded off in search of something to eat. He craved something warm. Something bloody. Something decidedly un-deerlike.