An unexpected guest sprinted through the end zone of Sunday's Packers game

That escalated quickly.

Perhaps the most elite athlete to take the field during the game between the Green Bay Packers and Indianapolis Colts wasn't even a human.

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Late in the third quarter of the Colts' 31-26 win, a squirrel broke loose in the end zone. The game was stopped momentarily until the squirrel darted off the field under a wall close to the tunnel.

The squirrel was later seen making friends with Clay Matthews and Datone Jones on the Packers' sideline.

Unfortunately for the Packers, the squirrel didn't bring good luck. Maybe the Colts sent him on the field as a distraction? The world will never know.

(h/t Fox Sports)