The Gila Monster

HO.
LY.

SHIT.

That's a big lizard.

Not surprisingly, it's not a threat to us:

The Gila monster (pronounced /ˈhiːlə/, HEE-la), is a species of venomous lizard native to the southwestern United States and northern Mexico. A heavy, slow-moving lizard, up to 60 centimetres (2.0 ft) long, the Gila monster is the only venomous lizard native to the United States, and one of only two known species of venomous lizards in North America, the other being its close relative the Mexican beaded lizard (H. horridum). Though the Gila monster is venomous, its sluggish nature means that it represents little threat to humans. However, it has earned a fearsome reputation, and is often killed by hikers and homeowners, despite being protected by state law in Arizona and Nevada.