Colossal Biosciences, a biotech startup with celebrity investors, is aiming to bring extinct animals like the mammoth, dodo, and Tasmanian tiger back to life by 2028 using gene-editing technology. The company is already making progress, with the mammoth being a key focus, but they are also considering the dodo and Tasmanian tiger as potential candidates due to their shorter gestation periods. While Colossal Biosciences is known for its de-extinction efforts, they also dedicate resources to conservation and species preservation through a non-profit foundation called the Colossal Foundation. This foundation will use the technologies developed for de-extinction to help endangered species like the vaquita, northern white rhino, and pink pigeon.