Ben Lamm, CEO of the Dallas-based company with an estimated value over $10 billion, said the successful gene-editing of lab mice, which they’ve dubbed “woolly mice,” is a big step forward, and proof that Colossal is “on track” to create a woolly mammoth.

Dallas-based Colossal Biosciences announced the birth of the “Colossal Woolly Mouse,” genetically engineered mice that express certain

De-extinction company Colossal mixed mammoth and mouse mutations in a single strain to create a shaggy-haired rodent.

Woolly mammoths roamed the frozen tundras of Europe, Asia and North America until they went extinct around 4,000 years ago. Colossal made a splash in 2021 when it unveiled an ambitious plan to revive the woolly mammoth and later the dodo bird.

Scientists looking to bring the extinct woolly mammoth back to life have made adorable progress—using gene editing to create a "woolly mouse." The team at genetics and biotech firm Colossal Biosciences have imbued rodents with thicker,

The little rodents' genes were edited to exhibit traits associated with a woolly mammoth genome—including fluffy, dirty-blonde fur.