The diet of dinosaurs varies from species to species, some are carnivores, while others are herbivores.
Theropod dinosaurs such as Tyrannosaurus and Velociraptor are carnivores, mainly feeding on other dinosaurs and some smaller animals. They have sharp teeth and strong jaw muscles, which can tear the skin and flesh of their prey and swallow them directly.
Ornithischian dinosaurs are herbivores, and they mainly feed on plants, leaves, branches, fruits, etc. These dinosaurs have specialized mouths and teeth that can effectively cut and process plant materials.
It is worth mentioning that some dinosaurs have a more complex diet, eating both meat and plants, such as Ceratops and Stegosaurus. Their food sources are very wide, including leaves, herbs, fruits and small animals.
In short, the diet of dinosaurs varies from species to species. They gradually adapted to different ecological environments during the long process of evolution and formed their own unique diet types.
