You posted this awhile ago, but I'm thankful you asked! It is not mine, but I think I know why it looks familiar- my character, Tuk, IS based off of the Halo universe's "Jackals" or whatever they're called. Kig-Yar. I honestly haven't played much Halo, but had a friend run a Halo-based tabletop game based on before the humans came into play, and since I like to draw my characters, and I think Elite are ugly as sin, I bargained to be able to play a different race. I did a few hours worth of research on the race, made some sketches, some story ideas, threw it at my DM, and he said it was awesome, so I ran with it.
After the game had died, I still had a character around, and decided to tweak to design to more closely resemble raptors of the dromaeosaur variety ( I like troodons, specifically ), and that's how I got my Tuk.
Good eye! And thank you for your concern for fellow artists, and their art being used respectfully!