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...

India leaps into his pool, pouncing on a purple plastic egg—his favorite toy, according to his caregivers. After a few minutes, the tiger ambles over to his watering tub. Instead of taking a drink, he plops in and closes his eyes in contentment. Although he’s young—roughly 10 months old on this June...

At Black Beauty Ranch, titles like “caregiver” and “maintenance technician” don’t do the people who hold them justice, and they don’t capture the dozens of unique tasks the team carries out every day: figuring out how to get pine sap off a goat’s horn (rub it with peanut oil), learning how to “drag”...