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...

Wherever you are in the U.S., a coyote may be taking up residence less than a mile away. If you live in the city, you’re more likely than your rural cousins to encounter raccoons. And regardless of geography, you probably share your home with dozens of species of insects and spiders. These facts...

Prairie dogs are one of the most controversial and widely misunderstood wildlife species in North America. Since early European migration onto the North American grasslands, prairie dogs have been celebrated as an essential keystone species for healthy grasslands ecosystems, but also vilified and...

Decaying logs and miniature bogs, hollowed stalks and piled rocks, nutritious pollen and leaves fallen: They’re not the stuff of traditional nursery rhymes and baby showers. But if wild mothers-to-be had gift registries, these natural supplies would top the list. Though the basic elements for...

For more than two decades, the Humane Society of the United States has welcomed interns hoping to expand and enhance their professional skillset—and broaden their animal welfare knowledge in the process. But the opportunity to fight for all animals hasn’t always been convenient or inclusive; our...

It’s not easy to accept that all things must eventually come to an end. We often go into denial in the face of the inevitable and airbrush away the aftermath when it does occur. So it probably shouldn’t have surprised me to read about a gardener who glossed over the demise of an entire tree with...

My husband and I were contemplating whether to hike the 3-mile trail in Utah’s Zion National Park that September day. I’d read that this trail was our best chance to spot bighorn sheep, but after a week of exploring the five national parks in the state, our bodies were tired—and it was already late...