"We have a responsibility to imitate the natural food chain of the animals — in terms of both animal welfare and professional ...

The Aalborg Zoo in Denmark said it would take certain surplus pets such as chickens, rabbits and guinea pigs to be "gently euthanized" and fed to its captive predators.

The Aalborg zoo says it is trying to mimic the natural food chain of the animals housed there and offers assurances the pets ...