"Sis, is this dog a zombie dog?" Bai Yifan frowned while looking at the mutated golden retriever with black blood dripping from its mouth.
If not for its long orange fur, you couldn't tell it was a gentle dog before it mutated.
"This is a mutant animal. They aren't zombies themselves, not as mad as zombie animals, but more ferocious than ordinary animals. They're immune to the zombie virus, and some mutant animals won't become zombie animals even if they eat zombies."
Bai Xiqin took out a dagger and stabbed it straight into the mutant dog's head.
The mutant dog was already dead. Its fur had loosened a lot, making it easy to cut open its brain.
A crystal core was cut out, appearing semi-transparent and pale yellow, shimmering with brilliance.
This crystal core contained a tremendous amount of energy.
Ordinary crystal cores are white and can be absorbed by all superpower users.
