pet dog
Pets — some of life's greatest sources of joy, love and, at times, frustration — can add up to a large carbon [paw]print. Since the pet products market has expanded from collars, food and litter to apparel, accessories, baked goods, fitness classes and much more, the impact pets have on the environment has grown. From cats and dogs to rabbits and horses, become a green pet owner with MNN's tips and ideas in the articles below. (Photo: Flickr)

Doggy blood donors save lives

What kind of animals belong on flights?

9 of the world's largest dog breeds

Dying rescue dog is a police K-9 for a day

Husky turned away for her 'weird' eyes gets a new home — and a big hug from the internet

For this stray dog, there's no place like Subway

What are dog whiskers for?

What does 'no-kill' mean at animal shelters?

Listen to this pug and you'll understand why the makers of 'Halo' hired him for voice-overs

Are male dogs causing your allergies?

What your cat's tail can tell you

How Bear the dog is saving koalas injured in Australia's bushfires