Phorusrhacidae is a large carnivorous bird species. The closest relative to them today is the crane family. The terror bird, also known as the terror bird, is a bird like carnivorous animal that lived alone during the same period as the saber toothed tiger. It is about 1-3 meters tall. Terror birds have hard leg bones and strong muscles, which can completely crush the bones of medium-sized prey and slowly feed on the nutrient rich bone marrow in the prey's bones. According to scientists' estimates, terror birds can reach speeds of up to 97 kilometers per hour, and the extinction of terror birds is believed to be related to wolf packs and disasters.

Terror birds lived between 64 million and 10000 years ago and are now completely extinct. It may have originated from the Eurasian continent, and after arriving in the Americas, due to its position at the top of the food chain and lack of survival competitors, it evolved to a considerable size. The terror bird can reach a height of 3 meters and weighs 400 kilograms. It is a type of bird that cannot fly, and this now extinct giant bird family is called the terror bird. The body shape of terror birds is very similar to ostriches, but terror birds are carnivorous animals. 10000 years ago on Earth, terror birds were undoubtedly the successors of dinosaurs and became the most terrifying predators on the ground.