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)

6 weird things dogs do when they poop

The moment this street dog recognizes his long-lost owner is pure joy

Leptospirosis: How worried should dog owners be?

Do animals have a sixth sense about natural disasters?

Missing for 5 years, deaf and blind dog is reunited with her family

Why does your vet take your pet 'to the back'?

10 quotes about dogs and the famous people who said them

Why do huskies have blue eyes?

Dogs may not be as exceptionally smart as we think they are

Golden retriever saves baby koala's life, and their friendship is adorable

Cats don't deserve their rat-catching reputations

10 of the smartest dogs in the world