Spiders of north america Today, there are about forty thousand species of spiders on our planet, and more than three thousand arachnids live in North America, some of which are extremely dangerous for humans and animals. Chilean pink tarantula A relatively large spider from the genus Grammostola. Representatives of the species are popular as exotic pets, are distinguished by non-aggressive behavior and, as well as ease of care. The arachnid is brown in color, including chestnut and brown, sometimes partly pink. Light hairs cover the legs and body.