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The rattlesnake Crotalus cerastes is venomous to humans.

Furthermore, it was only sidewinding rattlesnakes - a species called Crotalus cerastes - that used this strategy.

The researchers observed the venomous sidewinder rattlesnake species Crotalus cerastes, a denizen of the southwestern United States, as it moved in a large enclosure at Zoo Atlanta filled with sand from the Arizona desert.

In Egypt, on the other hand, the cobra, the asp, and the cerastes are as numerous as ever, and are much dreaded by all the natives, except the professional snake charmers.

Some think one hieroglyph is a cerastes, but Dr. Birch says the group probably consisted of a harpoon and three vertical lines—a common sign of plurality.