Eagles fans swarm Lincoln Financial Field in dog masks for NFC Championship (PHOTOS)
Where the Eagles Found their Dog Masks - InsideHook
Eagles fans swarm Lincoln Financial Field in dog masks for NFC Championship (PHOTOS)
Why Do Eagles Fans Wear Dog Masks? - Thrillist
Eagles fans are snapping up creepy dog masks to support their 'underdog' team
Want to make a quick buck? Just sell dog masks to Eagles fans.
Eagles fans are buying so many underdog masks
Eagles fans swarm Lincoln Financial Field in dog masks for NFC Championship (PHOTOS)
For Eagles fans, joke underdog masks are serious business - CBS News
Philadelphia Eagles Dog Masks: Chinese Mask Company - Sports Illustrated
Welcome to the Eagles' Bandwagon, America โ VOICES: River City
Eagles Winning Merchandise War as Foles Bobbleheads Up 900% - Bloomberg
Philadelphia Eagles' Zach Ertz explains origin of 'underdog' masks in essay
Why the Eagles are wearing dog masks - The Washington Post
Where Did Eagles Get Those (Under)Dog Masks From? Here's Where You Can Get Yours โ NBC10 Philadelphia