Here's where you can buy your official Eagles underdog mask

Philly not showing any fear

Eagles fans swarm Lincoln Financial Field in dog masks for NFC Championship (PHOTOS)

Super Bowl Prediction: Patriots Have Edge Over 'Underdog' Eagles - The New York Times

You have fun when it's time to have fun and get serious when it's time to get serious

LOOK: Chris Long barks at fans and breaks out the dog mask to celebrate Eagles win

MOLEZU Halloween German Shepherd Dog Head Mask,Novelty Party Costume Super Bowl Underdog (Coffee) : Clothing, Shoes & Jewelry

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Why NFL Fans Feel a Type of Way Over League Selling Eagles 'Underdog' Shirt

Maybe Next Year' Captures Eagles Fandom's Strange Relationship With Success - The Ringer

Philadelphia Eagles have no fear underdog is here shirt - Guineashirt Premium ™ LLC

Philadelphia Eagles dog masks go viral after upset playoff win - Sports Illustrated

Here we go again: The Eagles are big underdogs in Super Bowl LII