Why Kittens From the Same Litter Can Look Completely Different

Every kitten on this earth is cute in its own way, but even those from the same litter can look completely different. It turns out, thanks to a phenomenon called "heteropaternal superfecundation." -- Producer/Video by: Jason Lederman Research: Jason Lederman Narrator: Amy Schellenbaum Media: Brooklyn Nine-Nine (2017) Fox The Aristocats (1970) Walt Disney Productions -- FOLLOW POPULAR SCIENCE https://www.popsci.com Facebook: http://ift.tt/1mDk8YO Twitter: https://www.twitter.com/popsci Instagram: http://ift.tt/2ieE7iU Snapchat: http://ift.tt/2fSZV2X Pinterest: http://ift.tt/2idLrLJ