5. Mutant zebrafish have cabernet blood
OK, so zebrafish are a tropical minnow, common in home aquariums. Because marine biologists are so darn hilarious, common blood mutations in this particular breed are all named after wines: merlot, frascati, retsina, riesling, grenache, thunderbird (awesome), and, yep, cabernet. We'll spare you the science, but all of them have to do with a decrease in blood cells and not an increase in charmingness at dinner parties.