The mountain lion known as P-47 survived fires, freeways and hostile ranchers. But in March, the 3-year-old big cat—tracked by California biologists since his kitten days—succumbed to a hidden hazard: an insidious form of food poisoning. Six anticoagulant compounds—chemicals used to kill rodents...

The Humane Society of the United States works with community leaders and animal care and control agencies to create Wild Neighbors communities, where humane and non-lethal solutions are given priority.