Vulcanodon (vul-KAN-uh-don) (meaning "Vulcan, the Roman god of fire, tooth" because fossilized teeth were found in volcanic material) was a very early sauropod dinosaur (a Vulcanodontid) about 20 feet (6.5 metres) long. It lived during the early Jurassic period about 208 to 201 million years ago.. It was a long-necked, long-tailed plant-eater with a small head, thick legs, and a bulky body. It measured about 20 feet long.

It had nail-like claws on its feet and an enlarged claw on each big toe. Its front legs were relatively long. A partial fossil has been found in Mashonaland North, Zimbabwe, Africa.

Although many sauropods may have traveled in herds, bonebeds of Vulcanodon fossils have not been found. Vulcanodon's life span is not known.

Vulcanodon, like other sauropods, probably hatched from eggs. It is thought that sauropods did not take care of their eggs.

This big, heavy reptile was an herbivore (it ate only plants, like ferns and tree leaves). It must have eaten a tremendous amount of plant material each day to sustain itself. Vulcanodon must have spent most of its time grazing. It swallowed leaves and other vegetation whole, without chewing them. Its food probably included conifers (which were the dominant plant when the large sauropods lived), gingkos, seed ferns, cycads, bennettitaleans, ferns, club mosses, and horsetails.

Venenosaurus was a plant-eating dinosaur (a titanosaurid sauropod) from the early Cretaceous period. It was named by paleontologists Tidwell, Carpenter, and Meyer in 2001; the type species is V. dicrocei.