An Arizona insect holds the Guinness World Record for most toxic insect venom. You might be surprised, but this little bug ...

While most are harmless, some venomous species are dangerous to humans. Like opossum, raccoon and skunk, rattlesnakes and ...

Like opossum, raccoon and skunk, rattlesnakes and black widow spiders adapt to urban development rather than leave the area. That makes it more likely they'll come into contact with humans ...