It comes. You can hear it. The bellow of a bullock slowing to a nasal whine. A puff of air, shot through wet nostrils. A doggish grumble, and you can almost see the jaws part before the growl soars through the octaves to become the devilish yip yip yip that has circled you for hours. In the solitary hunt, driven wild by the salty minerals of your fear hanging in the cold air, and the expectation of gouting blood – the hot rush to bathe a black snout – you sense it tensing into a final stalk.