A St Tammany Parish K9 unit was pursuing a burglary suspect when the suspect attacked the human in the team. Thor, the humans 4 legged partner attacked the burglar to protect his partner and was stabbed repeatedly. The 2 legged officer, having the use of opposable thumbs, shot and killed aforementioned burglar. While he lost a lot of blood, Thor was treated for his wounds, given a transfusion, and is recovering. You don't attack the police, even if he is a dog. (And where do you get the blood for a canine transfusion?)
In other LEO news, my nephew made his first arrest the other day after stopping a home invasion suspect after a high speed chase when the suspect wrecked his motorcycle.