It is not impossible to domesticate them with human wisdom. Seeing that birds are raised as ornamental species by human beings shows that these monsters 65 million years ago can serve human beings. Now even reptiles can be pets, let alone dinosaurs. Only when dinosaurs return will the good days of mammals end. Their greedy and selfish nature will make them extinct today's animals, thus quickly occupying the niche. However, according to human's obsession with dinosaurs, it is estimated that today's animals will be extinct, and humans will not pity them, because there are dinosaurs they like.