Meet Senor Bigotes, a paca who has found a new home at La Sende Verde animal refuge in Bolivia. One of the rarest animals in the world, he is the only known paca in captivity. Senor Bigotes, meaning whiskers, was rescued from the black market two years ago. An endangered species, the paca is the largest nocturnal rodent in the world and is rarely ever spotted. Credit: YouTube/Swiatoczamigoski