The world's rarest snake, the Antiguan racer, is making a comeback after being highly endangered for years. The snake was killed off by invasive mongoose and invasive Eurasian black rats, leaving only 50 Antiguan racers in the world. However, six conservation groups joined together to increase the snake's population. Now, 500 Antiguan racers exist and its territory has expanded to other islands.
Click here to read more and view pictures.
