Hawks, eagles, roadrunners, weasels, raccoons, skunks, kingsnakes and a variety of other mammals and birds will eat rattlesnakes, especially young rattlers. Even tarantulas will eat young rattlers.
snakes
No, desert tortoises are not on a rattlesnake's menu.
an eagle
Musk oxen, deer, desert sake, and dingos eat diamond leaf willow. The desert tortoise and diamond back rattlesnake eat diamond leaf willow too.
A rattlesnake could kill an animal the size of a horse or cow. However, it could not eat such a large animal. Its bite would be in self defense.
A variety of animals, including hawks, eagles, owls, roadrunners, foxes, coyotes, skunks all will kill and eat a rattlesnake, including the Arizona black rattlesnake.
Rattlesnake or mountain lion. Maybe even a hawk? Depends.
the desert tortoise does
There is no species called the "desert rattlesnake" but there are dozens of species that live in the desert. The image above is one of them.
Rattlesnake venom is not poisonous and it would become deactivated during the cooking process. It would generally be safe to eat.
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Amphibians are found in the desert but are usually only seen after a heavy summer rain. They spend most of the year underground. At that time they can be quite numerous in certain areas. Another animal that is often the symbol of the desert, at least in the United States, would be a rattlesnake. While they do inhabit the desert, they remain hidden most of the time. One can spend years hiking in the desert and never encounter a rattlesnake. They see you but you rarely see them.
Yes, it would, but the rattlesnake has poison.