A pit bull was shot to death Saturday after it shrugged off a jolt from a stun gun and turned on a Mountie trying to stop the dog's attack on a llama.

RCMP in Langley, B.C., said they were called to the 1400 block of 200 Street at about 8 a.m. PT after a neighbour reported seeing two pit bulls attacking an alpaca and a llama in an enclosed area of the property.

According to a release, the officers saw one of the pit bulls hanging from the throat of the llama, which was bleeding profusely. The alpaca had also been attacked and bore notable neck wounds.

In a bid to end the attack, one of the Mounties used his Taser, which momentarily stunned the animal. However, the dog swiftly recovered and charged another officer.

An officer fired his pistol twice, wounding the animal. It then ran under a fence toward people drawn to the scene, the release said.

The officer followed the dog around a residence. When it turned and charged him, he fired three rounds with his pistol. The dog ran into a nearby barn, where it collapsed and died a short time later.

The second pit bull was outside the fenced area and had some blood on its chest. It growled but made no attempt to attack anyone.

The Langley Animal Protection Society has seized the uninjured pit bull. An emergency on-call veterinarian was called to assist the injured llama, which survived. There was no word on the alpaca's condition.

The owner of the two dogs was a guest visiting the property owner.