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)

When his teacher's dog died, this young boy did the kindest thing

Dog found tied to a tree with a goodbye note finds forever home

Lindsey Vonn brings rescue dog to Olympics

Rescue pups show off at their own dog show

11 cat-tacular stairs and ladders

Cats go for the gold in 'catching' Olympians

All aboard the doggy daycare bus

Why we turn to dogs when disaster strikes

Woman charms bird with lovely lullaby

Border collies run like the wind to bring new life to Chilean forest

9 of the world's hardest-working cats

Lonely library dog now an internet sensation