Day 11: Cruel
"These nasty critters are about the size of an earthly squirrel. They are also very social, as they feed and clean each other. They also let out screeches from time to time, leading researchers to believe, they might have developed a basic language to communicate.
Don't get fooled by their apparent cuteness and social skills. These animals are ruthless killers. They have a large appetite and will eat everything coming in their way, be it dead or alive. They hunt alone or in herds with up to two dozen specimens, allowing them to take down creatures the size of an elephant."