Opossums have narrow snouts, small eyes, and long, hairless, prehensile tails that act as a fifth limb for climbing trees. Their bodies are covered in grayish white fur, and they have average of 52 teeth. Their sharp claws, opposable thumbs on their hind feet, and prehensile tails make opossums agile climbers. They have a reputation for playing dead by curling onto their back, sticking their tongues out, squirting foul fluid from their anuses, and staring off into space when confronted by predators. Opossums also attempt to scare predators by baring their teeth and hissing