Sacramento has chapters of one or more humane societies. The true measure of human civilization, it is often said, is by how it treats the animals, who cannot protect themselves. These societies exemplify the saying, as they work towards prevention of suffering and abuse of both animals and humans, though the term in its present usage mostly refers to prevention of cruelty towards animals. Some of the policies followed by such societies include sheltering, adoption, and euthanasia of animals, along with nationally coordinated drives such as for animal rescue during natural disasters, treatment and transport of animals and advocating conservation and preservation of wildlife. Some humane societies may also follow a no-kill policy for the sheltered animals, unless they suffer from an untreatable medical condition. Humane societies emphasize on the reciprocal bond between animals and humans, the importance to show compassion to all animals, and the need to promote effective management of our natural heritage. Such societies in Sacramento may also advocate lifestyle changes such as vegeterianism.