Donated pets will be “gently euthanized” by trained staff and then used as “fodder” to take care of the well-being of predators, Aalborg Zoo said.

A zoo in Denmark asked pet owners to donate their unwanted guinea pigs, rabbits, and chickens to feed the predators to "imitate the natural food chain of the animals."

A Denmark zoo posted a request online asking for small animals, including chickens and rabbits, to be donated to feed larger predators. The zoo said its goal is to mimic the natural food chain. NBC News’ Gadi Schwartz reports as the request faces backlash online.