While at first being a concept in the likes of legends and thought experiments, the first stable human-animal chimeras (not hybrids but related) to actually exist were first created by Shanghai Second Medical University scientists in 2003, the result of having fused human cells with rabbit eggs.

Is there a real chimera?

Chimerism is so rare that there have only been 100 confirmed cases in humans. However, this may be due to the fact that humans might not be aware that they have this condition to begin with.

What animal has the closest DNA to humans?

Chimpanzees now have to share the distinction of being our closest living relative in the animal kingdom. An international team of researchers has sequenced the genome of the bonobo for the first time, confirming that it shares the same percentage of its DNA with us as chimps do.