What do rattlesnake young look like?

There are several types of rattlesnakes, but the easiest way to identify them is by the rattles at the end of its tail and the arrowhead shape of its head.

usually sharp fangs

If you mean a 'rattlesnake' - see the image above

Rattle Snakes look like a regular snake. Except it looks like they have small pieces of corn on the rear end of their body.

Well, they all look different, but they have the tell tale rattle on their tails.