Lennox, a seven-year-old black dog who lived with his family in Belfast, Ireland, and worldwide protests after dog wardens seized him because they considered him a pit bull type of dog and, thus, a public danger. Pit bulls are banned under the U.K.'s Dangerous Dog act.

The dog's owners say Lennox was a mix of American bulldog and Labrador, but Belfast dog wardens called him a "possible pitbull type."

The dog, first taken from his owners in 2010, was put down today after numerous court battles and great public outcry.

And while the dog's owner, Caroline Barnes, lost the battle to save her dog, she was far from alone in her protests. Lennox's supporters took to social networks, like Facebook and Twitter, to put out pleas for people to join them in their appeals to keep Lennox alive and relocate him outside of the area.

The dog's saga spread far, lighting up social networks.