A rattlesnake.
it look like a round worm
it looks like a normal worm there's no difference
a bit like a worm
They look like a snake.
it is ugly
Sand worms are large, predatory invertebrates found in sandy environments. They have long, slender bodies and are often depicted with multiple rows of teeth. Sand worms are fictional creatures popularized in science fiction and fantasy literature, so people cannot actually get them in real life.
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.
because they look like worms accept they are grey and herbivore. (plant eater)
a rattlesnake uses mimicry to look like other animals
a willy worm looks like a catarpillar with black "spikey fur"
See the image above of an eastern diamondback rattlesnake.
It looks like a flying red worm