Colossal Biosciences, a biotechnology company, is using genetic engineering to bring back traits of extinct animals. Since 2021, they have studied ancient DNA, focusing on key traits of species like the woolly mammoth and the dodo bird. Recently, their scientists edited seven genes in mouse embryos, resulting in mice with thick, woolly fur. This experiment helped them understand cold-resistant traits that allowed mammoths to survive in the Arctic. Although they shared their findings online, the research has not yet been reviewed by other scientists in a journal. The company hopes to apply this knowledge to Asian elephants, which are closely related to woolly mammoths. However, because Asian elephants are endangered, ethical concerns and strict regulations must be considered before making genetic changes. Genetic engineering sparks debate. Some scientists argue that modifying living species is different from reviving extinct ones. Others see potential benefits for conservation, farming, and medicine. Advances like CRISPR have made gene editing more precise. Colossal has raised over $400 million, showing strong interest in this field. While de-extinction remains controversial, genetic research is shaping biotechnology’s future.