I saw on a Nova program a while back some scientists doing studies on wildlife just being exposed to the sounds of predators. They recorded predator sounds and setup cameras and speakers to play a predator sound when prey wildlife were near.
It changed all sorts of things, including breeding patterns.
Also I know the San Diego wild animal park put predator animals upwind of prey animals and saw behavioral changes / different sleeping patterns and more "wild like" behavior just from being exposed to the smell.
It changed all sorts of things, including breeding patterns.
Also I know the San Diego wild animal park put predator animals upwind of prey animals and saw behavioral changes / different sleeping patterns and more "wild like" behavior just from being exposed to the smell.