K-9 Cops: 4 of the All-Time Greatest

Photo courtesy petsworld.in.

Dogs and humans share a deep, spiritual bond. For millennia, we have welcomed dogs into our world; opening our hearts and homes to these magnificent creatures. And, in return, dogs have given us companionship, undying loyalty, affection and, quite often, protection.

Here are four amazing dogs, who were called to the highest duty – to protect and serve their human family.

Appollo

A valiant German shepherd, this NYPD search and rescue dog was a first responder durin...