Here's why college football teams use live animals as mascots

(CNN)The Georgia Bulldogs took on the Texas Longhorns in the Sugar Bowl Tuesday night in New Orleans, and the clash wasn't just on the gridiron.

Before the game the teams' live animal mascots -- Georgia's Uga the bulldog and Texas' Bevo the steer -- faced off on the sidelines.
It was supposed to be a simple photo op, but nobody told Bevo, who promptly charged at Uga (and almost took out a few humans in the process).
So, just why do college football teams have live animals mascots anyway?
    The answer is actually pretty simple, Michael Lewis, a marketing professor at Emory University in Atlanta, told CNN.
    "Human beings love animals," said Lewis, who runs a podcast on sports analytics research. "They're so much more compelling than a guy in a suit. The live animal mascots have some real advantages. I think of them as like a focal point for the fan community to get behind."

    It all started with a dog

    On any given Saturday afternoon, you'll find all manner of beast roaming the sidelines at games: Rameses the ram at North Carolina, Bill the goat at Navy, Traveler the horse at USC, the War Eagle at Auburn, Mike the tiger at LSU, Ralphie the buffalo at Colorado, Joy and Lady, the bears at Baylor.
    Bill the Goat at Navy
    But it's believed the first live animal college mascot was Yale's Handsome Dan bulldog. A student from England named Andrew Graves brought the first Handsome Dan to football and baseball games in 1889, according to the Yale News. There's been a continuous line of them ever since. An Olde English Bulldogge named Walter now represents Yale as Handsome Dan XVIII.
    Lewis says it's no surprise that a dog was college football's first live animal mascot.
    "Dogs are part of the family," he said, so fans have a natural affinity for them.
    In the case of Uga, Georgia's mascot, Lewis said the bulldog's popularity extends beyond the university. It's as thoug