Bengal cats have "wild-looking" markings, such as large spots, rosettes, and a light/white belly, and a body structure reminiscent of the Leopard Cat. The Bengal's rosetted spots occur only on the back and sides, with lots stripes elsewhere. This breed typically also features the "mascara" marking (horizontal striping alongside the eyes), and foreleg striping.
The Bengal cat is usually either classed as a brown-spotted or snow-spotted (although there are more colours, brown and snow are the only colours of Bengal that the Governing Council of the Cat Fancy (GCCF) recognise. Within brown Bengals, there are either marble or spotted markings. Snow Bengals are also either marble or spotted but are also divided into blue-eyed or AOC (Any Other Colour) eyes.
After three generations from the original crossing, the breed usually acquires a gentle domestic cat temperament; however, for the typical pet owner, a Bengal cat kept as a pet should be at least four generations (F4) removed from the Leopard Cat.
(info changed a bit from the http://cats.wikia.com/wiki/Bengal)