A day passes and Rich is in a comatose state. Within his body Mike and Rich's offspring are growing, taking nutrients from Rich's body. Mike goes out to hunt. He brings back food for Rich. He has chewed a small rabbit into a thick goo, a rich slurry of protein. He opens Rich's mouth forcing his long thin tongue in to Rich's throat, pushing Rich's throat open wide to begin pumping the liquefied rabbit into Rich's stomach.
Late, near twilight, the day after Mike mated with Rich, Rich is looking a little green. He has regained consciousness and fades in and out. He feels the life sqirming inside of him, but is too weak to move or cry out and couldn't move even if he had the strength as he is attached to the wall of the cave. Within him, his offspring hunger as he does.
Two of the seeds are developing into the offspring of both Rich and Mike. The seeds, once implanted absorb DNA from the host and combine it with the impregnator's DNA. The third seed, from the center cock has dissolved and is assimilating Rich's body, merging with him, modifying the host's DNA to be compatible for full conversion into a new species. He will become it and it will become him, a full adult like Mike with all of Rich's memories intact.
Rich hungers and Mike returns with more liquefied food to feed Rich. Rich, at first was completely disgusted by the bloody, slimy green brown slurry that was being pumped into his mouth and stomach. He would have thrown it up, but the growing life within him absorbed two thirds of it quickly after it entered his stomach. The other third of the slurry, absorbed almost immediately, went to feed Richs' changing body.
Mike is a good mate and as Rich changes, his bond grows stronger. He hunts and protects his changing mate. Richs' hair has fallen out to be replaced by stubbly new neon orange growth that will become dense fur. Mike is strong and a good provider, but Mike is a beta male; Rich will be a larger, stronger, more muscular, more potent; he is changing into an alpha male; he is already half again as large as his mate.
Several times now, as Mike sucked Richs' green, but still human looking cock, Rich noticed through blurred vision the blue spots that pulsated dim to bright on both he and Mike as Mike gave him pleasure. Rich's scrotum feels heavy and it feels like his balls have become one large ball. The ball seems to have become attached beneath his penis and there are two bud like protrusions begining to grow on either side of his almost constantly stiff cock. When Mike pleasures him, he can feel that his scrotum has become bony and hard and fused to his pelvic bones, like a natural athletic cup, no doubt to protect the breeding organs.
Mike returns from hunting, his gullet filled with rich slurry to feed his family. He approaches Rich who is starving. Rich willingly opens his mouth and Mike's thin snake-like tongue darts out and entwines with Rich's changing tongue. Their mouths move closer and they kiss, Mike stimulating Rich's stiff green cock with a clawed hand and then Mike pumps more food into Rich to feed their offspring and his mate.
A species that can mate with both sexes and produce offspring is a succesful species indeed.