WASHINGTON—Animal protection and conservation groups sent notice today of their intent to sue the U.S. Fish and Wildlife Service for missing its deadline to decide whether the common hippopotamus should be protected under the U.S. Endangered Species Act. The deadline results from a 2022 petition...

Sitting on her porch in the desert one afternoon while recovering from surgery, Christine Hass closed her eyes. The operation to fix her detached retina had been difficult, and she sought respite from the lingering pain. “Suddenly I could hear all the birds singing. It was March—the migrants were...

A humane backyard is a safe haven for wildlife—a space where animals can thrive free from pesticides, trapping and other threats.