Animal husbandry with more settled communities. The first wild animal to be domesticated was the dog. Half-wild dogs, perhaps starting with young individuals, may have been tolerated as scavengers and killers of vermin, and being naturally pack hunters, were predisposed to become part of the human pack and join in the hunt. Prey animals, sheep, goats, pigs and cattle, were progressively domesticated early in the history of agriculture. Pigs were domesticated in Mesopotamia around 13,000 BC, and sheep followed, some time between 11,000 and 9,000 BC. Cattle were domesticated from the wild aurochs in the areas of modern Turkey and Pakistan around
The Wild Animal Sanctuary donated merchandise, brought in more volunteers, and started a program of sponsoring individual animals. By 2007 the sanctuary was using of its site for rescued animal habitats. By 2010 it had of habitats. In February 2011, the sanctuary, in cooperation with Animal Defenders International, Bob Barker, and the Bolivian government (which had recently enacted legislation outlawing performing wild animals), received 25 lions from circuses in Bolivia that had typically housed the lions in crates for transport. The sanctuary built a fabric covered structure isolated from the main facility to house the lions while they got acclimated to the Colorado climate,