US company Colossal Biosciences has announced the creation of a "woolly mouse"—a laboratory mouse with a series of genetic modifications that lead to a woolly coat. The company claims this is the first step toward "de-extincting" the woolly mammoth.

Dallas-based Colossal is one step closer to bringing back the woolly mammoth.

Colossal Biosciences, a Texas-based company, genetically engineered a woolly mouse, marking an achievement toward its goal of resurrecting extinct species like the woolly mammoth. The woolly mouse is a tiny mammal engineered to express multiple mammoth-like traits,