The smallest brain to body ratios of dinosaurs were those of sauropods. Despite being the largest animals ever to walk on land, their brains were only the size of a tennis ball. However, that was sufficient, and sauropods were widespread until the extinction of all dinosaurs, so their tiny brains don't seem to have been much of a deficit.
3inches
the smallest dinosaur is a stegosaurus with a 2.5 once brain
Stegasaurus got by with the littlest brain mass per body weight. Was surprising it could feed itself.
Stegosaurus was nine metres long, and its brain was about the size of a walnut. This makes it the dinosaur with the smallest brain for its body size. Stegosaurus is dummest.
A Shandodon is a mythical dinosaur that has evolved and is the most clever dinosaur ever discovered!
the biggest dinosaur was amphicoealis fragillimimus and the smallest dinosaur microraptor or frutaidens
The smallest dinosaur is Microraptor, probably less than 1 ft tall, and is 2 ft long.
Epidexipteryx is the smallest known dinosaur. It weighed only 0.36 lb.
Most palaeontologists believe compsognathus was the smallest dinosaur, but recent discoveries of an a dinosaur, micropachycephalosaurus that may be the smallest dinosaur ever and has the longest name ever given to a dinosaur!The smallest dinosaur is said to be the compsognathus.Its just 2 feet long and weighs only up to 6.5 pounds. There are a few more small dinosaurs which have the same heeight of the compsognathus.They are the saltopus and the echinodon.
The smallest dinosaur is a humming bird.
The Compsognathus.
The cast of Brain Clever - 2009 includes: Beth Egnatoff