There is nothing cuter than baby monsters. And a recent crop of art from Pixiv proves this theory once and for all, by depicting a tired, three-headed baby chimera and a pair of napping baby griffins. It's almost too cute.
These two rhesus monkeys are called Roku and Hex. They look like regular old rhesus monkeys, and indeed they were born completely normal and healthy. But they are, in fact, chimeras, each the result of splicing six different genomes together.
The embryos of a male and female twin can sometimes fuse into a single fetus with both male and female sexual organs. Now an imaginative biologist has figured out how this could lead to conceiving a son without a father.