It's down to the Denver Broncos and Seattle Seahawks for Super Bowl XLVIII, and all kinds of fans are showing team spirit. We challenge you to take the cutest snaps of your furry fans and fluffy sideline cheerleaders getting caught up in Super Bowl frenzy. Instagram user mikealabird [1] couldn't resist taking a picture of this pup wearing his team's jersey.

The challenge runs through the Super Bowl on Feb. 2, so grab your smartphone and encourage your furry fans to say, "cheese." Upload pictures to Instagram with the hashtag #POPSUGARPets, and we'll share our favorites after the big game. And, of course, follow POPSUGAR Pets on Instagram [2] for pet inspiration and cute pictures of our favorite animals.