Riddick was hunting, hunting on the barren ice planet of UV 6, a planet that he's exiled himself to. He was hunting a herd of Uzarks, the indigenous creature of the planet. The creatures were huge and vicious, being meat eaters. But one carcass gave him food for weeks. He stood on a cliff over looking the herd, his knife drawn. He was wrapped heavily in gray Uzark pelts, the only way to keep warm on this ice ball of a planet. No real name, no real location, and no one goes to it. It was perfect to disappear on, which was exactly what he had in mind. It's worked for him so far.
The canyon where the herd had stopped wasn't deep; he could leap down and not even hurt himself. He stepped on the edge of the cliff and leapt down on one of the closest Uzarks with a roar, the knife sliced smoothly through the flesh and the herd scattered, cutting its losses. The nearly decapitated Uzark died quickly and he got his handmade rope out, putting the knife away after cleaning it on the snow, and tying the rope around the carcass. That's when he heard growling, deep predatory growling. He looked up with a return growl and came face to face with a enormous gray wolf, its top lip drawn up slowing its large canines. He slowly drew his knife again, willing to fight over his catch when it stopped growling. Coming up from its crouch and looked at him in interest. Its gray eyes darted down to his knife and sensing the danger leave he put it away.
The wolf slowly approached him and he straitened from his defensive crouch, now seeing just how large this wolf was. It met him head to head, shoulder to shoulder, meeting him gray eyes to black goggles. Its head bowed down sniffing the carcass but its eyes never left him. It straightened and ran off, he heard the yell of Uzark dying a short time later. He dragged the Uzark carcass out of the canyon and back to his cave, making quick work of skinning it, stretching the skin on the wall. He put his knife on the wall with the others and took up another one with a longer blade, he began the tedious work of craving up the carcass and storing it in a portion of his cave that was as cold, if not colder than the outside.
Riddick removed the pelts from his body and hung them up on hooks made from Uzark teeth. He lay down on his bed of Saber Cat skin, supported in between four Uzark ribs like a hammock and removed his goggles, hanging them off the side. He lay there staring into the roaring fire in the center of his cave ignoring the pain his light sensitive eyes were giving him; the pit made from Long Tooth Wooly Mammoth tusks. After a little bit he got up and got a hunk of meat from the 'freezer' and ran a sharpened rod made out of indigenous ore through it, setting it over the fire to cook. He cut the meat from the rod when it was done and ate his dinner.

A week later it was hunting time and he was tracking the Uzark herd again. The wind blew snow into his longish light brown hair and beard. He looked across the canyon and saw the same gray wolf looking down at the herd, it looked up and saw him. With its body hunkered low to the ground it walked away and he looked down at the canyon, seeing it enter it. He watched as it moved a slow circle around the herd, finally choosing one and leaping on it, ripping its throat out. The herd panicked and ran for the start of the canyon, but he raced ahead and laid in wait from them.
One went past and he opened it up from snout to tail, its internal organs splashed out into a streaming pile on the snow and it fell to the ground dying. He tried his rope around the carcass and tied it to a stone pyre. Riddick went to where he knew the wolf was and found it eating the Uzark carcass, ripping giant chunks off with its massive teeth. It stopped, sensing him and looked up at him. It bobbed its head to him and continued to eat. Riddick went back to his catch and dragged it back to his cave; the process began all over again.

He was hunting; the Uzarks were in a different canyon, a deeper one. He couldn't jump down and surprise them in this canyon. If he did he could risk breaking a bone, and if he broke a bone he wouldn't be able to hunt and so he would stave to death. That scenario is with different circumstances, if he broke a bone hunting Uzarks, he would become their prey, not something that he's looking forward to. He carefully started to climb down into the canyon, but his foot found a patch of ice and soon he was sliding down, fast, and unable to get his feet under him. He landed heavily in the snow and his ankle flared, he sprained it, he's lucky he didn't break it. Suddenly the roles shifted as he felt the Uzarks grow closer, suddenly they were the hunters and he was the hunted. He gathered himself to his feet, adding little weight on that ankle and took out his knife.
The lead Uzark leapt but there was a roar and the wolf jumped down off a ledge, tackling the Uzark and ripping its throat out with a spray of blood. Seeing their leader die the rest of the herd panicked and fled the canyon. The wolf approached him slowly and he put his knife away, this wolf just saved his life. It went to his side and nudged its massive body under his arm, giving him something to lean on. Riddick leaned on the wolf all the way back to his cave; he's seen the wolf outside several times since he first saw it. He lay in his bed and it sat at his feet, he took off his boots and socks and looked at his inflamed ankle, hissing slightly as he touched it gently with his fingertips.
The wolf touched it gently with the tip of its nose and he laid a hand on its muzzle, rubbing it slightly as if saying 'thank you'. It licked his palm and walked away out of the cave. Riddick laid back and removed his goggles, closing his eyes, comforted by the heat of the fire. He awoke a little while later to a sound, he drew his knife quickly and his eyes darted around his cave seeing the wolf there again, with the Uzark carcass in front of it.

For the next few weeks the wolf took care of him, bringing him food until his ankle was healed. And when it was they hunted together, it led the Uzarks, or whatever they happened to be hunting, into a dead end and he swiftly killed one or two, the commands for action mainly grunts and head movements. He quickly found out that the wolf was female and he grew to care deeply for it, and he knew that she felt the same way. He often been woken up by her licking his face, they wrestled on the cave floor for fun and she slept there on a bed of leftover Uzark pelts. Her scent was a welcome one in the cave, and he became familiar with it, using it to track her.

Riddick awoke with a start; the scent in the cave had changed. The wolf scent was gone, changed. He looked around for the massive canine, but didn't see it. He got up went to her bed, looking down in shock that wolf was no longer there. But a naked woman was lying there instead, her hair the same gray as wolf's coat. She smiled kind of like wolf, but she also smelled like, well, a woman. Her waist length hair was shielding her body from him; she was curled up against the cold. Her eyes opened and she looked at him, they were the same color as wolf's too.
"Riddick." She said in a guttural tone, rolling the R.