Activism is the practice of strong, vigorous support (through action) in support of or against a controversial issue. Environmental activism efforts include battling climate change and greenhouse gas emissions, defending the oceans, protecting forests, creating a toxic-free future, campaigning for sustainable agriculture, protesting animal testing, promoting vegetarianism/veganism, protecting endangered species and many more. (Source: Merriam-Webster Dictionary, Greenpeace / Photo: Flickr)

How a dog found in a garbage pile in Egypt found his calling in America

A puppy almost killed for being the 'wrong' kind of dog just landed a coveted police K9 job

This cat — and many others like her — spent most of her life as a lab test subject

Man cuts lawns for the needy in all 50 states

A Georgia couple met a dog breed they had never seen — and became their champions

The way animals are treated in Liberia is changing, and children are leading the way

Tigger got dropped off at the shelter at 16

How a shelter pup beat a deadly virus and found his way to a rock star's heart

Do pit bulls make good therapy dogs?

Police officers find homes for a box of kittens left on the road

How one teacher's incredible urge to run is sending her students to college

Camera-toting stray dogs join the fight against crime in Thailand