Yes, feces can save the species in some cases. One example is the preservation of the Northern White Rhino species using frozen fecal matter. This critically endangered species was reduced to only two living females, making natural reproduction impossible. Scientists decided to harvest viable sperm from deceased males and implant them in surrogate females. Since no females were available for surrogacy, researchers turned to fecal samples collected from the deceased females and inseminated them with sperm to obtain viable embryos. These embryos were then implanted into surrogate Southern White Rhinos, resulting in the potential birth of Northern White Rhinos and preventing the extinction of the species.