Wolves seem like large dogs until they show their teeth. Then you realize what the difference is. I photographed a pack of wolves at a kill a few years ago, and it was a remarkable sight. The wolves fought over the best parts of the deer, and they definitely didn’t understand the concept of 'sharing.' I used a 300mm f/2.8 telephoto. I rarely use the lens wide open simply because depth of field is so shallow. I expected the action to be fierce and fast moving, and this is why I used a fast shutter speed. I didn’t want even the smallest amount of blur. My settings were 1/640, f/4.5, and ISO 1000.