![]() ![]() And some experts think it might’ve sometimes hunted in packs to take down large prey-now that’s smart. Troodon’s big brain gave it good eyesight, keen hearing, and a strong sense of smell, which all helped the predator outwit its prey. (A real fifth grader’s brain is bigger than a baseball.) Troodon was about as large as a fifth grader, and its brain was about the size of a golf ball. It’s impossible for scientists to know for sure which dinosaurs was the smartest, but Troodon has the biggest brain-to-body ratio of any dino so far, which is one way scientists guess an animal’s intelligence. The dinosaur would come back and sit on the eggs to keep them warm. Paleontologists think Troodon produced a pair of eggs at a time, then buried them partway in mud. This sharped-tooth animal was a good parent. ![]() It’s possible that Troodon was even omnivorous-meaning it ate both animals and plants-like humans are. That included small mammals and lizards, and perhaps young duck-billed dinosaurs like Amurosaurus. However, this dino had several different shapes of teeth, which probably allowed it to eat different types of food. Since omnivores, such as raccoons and humans, eat. Broad, somewhat flat teeth are used for crushing and grinding vegetation, indicating an herbivore. T roodon is named for the Greek words meaning “wound tooth” because some of its teeth were razor-sharp. Sharp, pointed teeth such as canines and carnassials (last upper premolar and first lower molar that meet with a scissorslike action) are used for tearing and shearing meat, indicating a carnivore. Using its strong eyesight, Troodon sneaks up on its prey, using its long arms and fingerlike claws to nab the critter. Moving lightly on its two hind feet, the dinosaur follows its nose until it’s close enough to spot a mousey mammal. Dashing through what’s now North America 76 million years ago, Troodon sniffs out dinner. ![]()
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