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Dolphins are highly intelligent and social marine mammals.

Guinea pigs are gentle, curious pets.

Hamsters are desert-dwelling rodents who have become popular pets.

Often maligned and misunderstood, opossums play many important roles in their ecosystems.

To keep wild animals where they belong—in the wild—and out of zoos and circuses.

To make the ocean safer for those who call it home.

Do your homework So you’ve decided to add a new pet to your family. First, you should answer some questions: What kind of pet will be the best fit for your household? Do you have enough time to devote to the daily needs of a dog? Is there someone in your household who is allergic? What about a non...

Contents How many animals are used in experiments each year? Which animals are used in experiments? What kinds of experiments are animals used in? What kinds of institutions use animals in experiments? Where do laboratories get the animals they use in experiments? What is life like for animals in...

Some people might consider hamsters, guinea pigs and other small mammals as starter pets: tools to teach their children—many of whom have begged for a furry friend—responsibility. But while these animals can help kids develop respect and appreciation for all animals, parents should still have...

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

Danielle Tepper had always loved dolphins. When she went on vacation to Hawai'i, she knew she had to see them firsthand. Tepper—now a senior editor at the Humane Society of the United States—wanted to do it ethically, so she avoided captive dolphin attractions. Instead, she booked an excursion to...

The delegate seemed ready to pick a fight, already having mocked a proposed plastic bag ban and other pro-environment bills on the day’s agenda. As I finished my testimony in support of wildlife-friendly plantings, I steeled myself for a heated debate. But on that gray afternoon in February 2020...

It seemed like a good idea at the time: Buy a house with a two-acre property, let our energetic herding dog have the run of the place and spend blissful summer days digging side by side in the dirt with her. And it was blissful, watching Mattie carve out her napping spots behind the ferns and tall...

What can guinea pigs eat? And how much? Guinea pigs don't usually overeat, but it's important to provide the proper balance of pellets, hay and fresh vegetables. Like human beings, guinea pigs cannot make their own vitamin C, so they require vitamin C-rich foods in their daily diet. Inadequate...

Most cages marketed for guinea pigs are way too small. Guinea pigs need appropriate room to roam, with separate spaces for a nest, bathroom area and food and water. No animal is meant to live in a cage all the time, so make sure to provide your pig with time outside their enclosures at least once a...

When a person you love dies, it's natural to feel sorrow, express grief and expect friends and family to provide comfort—but although people often feel the same feelings of grief when they lose a beloved pet, it might go unacknowledged by others. Know that your grief is normal, and it’s OK (and even...

The process of finding a vet should be similar to selecting your own doctor. You’ll ideally want to seek recommendations from trusted sources and also research the veterinarian (and the clinic) on various criteria to ensure that they best meet your family’s needs and your pet’s individual health...

Guinea pigs have a lot of appealing qualities: They're small, gentle and personable, just to name a few. Like all companion animals though, they require special care and attention. Here are some important questions to consider before adopting a guinea pig: Where should you get a guinea pig? Instead...

It can be tempting to acquire a hamster on impulse. After all, these little guys are the picture of cuteness: small, round, furry, and inquisitive. A great starter pet, right? Not at all! Here are some important questions to consider before you dive headlong into a relationship. Learn More About...

Somewhere toward the end of the last ice age, we formed an alliance with wolves: Maybe the ancestors of dogs got food scraps while our own ancestors gained protection from predators and other humans. These social species eventually collaborated on a vast scale, possibly even hunting woolly mammoths...