There are two types of animals: wild and domestic ones. Wild animals are called so 'cause they live without a man in forest, deserts etc. In other words, they don't need a human to survive. Domestic animals live with a man, they are tamed by him. There are many rare animals around the world. These animals are called threatened species. People hunt them and kill them for leather, meat and fur. Except of this, the natural habitat of rare animals is destroyed. So they can't breed. For example, among the rare animals there is a sloth, an anteater, a duckbill, a Tibetan fox etc. All rare animals do exist but there is a real threaten of their disappearance. We must protect them to keep these species for next generations. Перевод нужен? :)