These Asian elephants, endangered species, needed to mingle with others of their species to encourage breeding, and they also needed more spacious quarters.

The new state-of-the-art exhibits are larger in order to encourage breeding.

Domestic cat breeders may use indoor cat enclosures to separate animals or encourage selective breeding.

According to UET, the events aim is to encourage breeding.

The cub's been hit with an Ontongard drug called Invisible Red; it's a powerful aphrodisiac to encourage breeding.

Bronx Zoo officials say that an interactive environment for gorillas, who thrive on being part of a group, encourages breeding.

It also established an award system to encourage successful breeding of rare animals and achievements in animal research.

Such farming does not encourage the feeding or breeding of wildlife and even if young creatures end up there, they almost certainly won't survive to adulthood.

The goal of the research is to use scents to guide the ocelots to more favorable habitats and encourage breeding.

Again, wet weather encouraged breeding.