What is the smallest known dinosaur?
The smallest dinosaur known is the Parvicursor remotus, which
was ony 12 to 15 inches long and is estimated to have weighed 4.8
and 5.7 ounces. Parvicursor was a tiny, bipedal feathered theropod
dinosaur. It was an Alvarezsaurid, so it only had a single finger,
with a claw. It may have used that claw to dig into termite mounds.
To escape predators, they would have run quite fast.