Super Bowl Prediction: Patriots Have Edge Over 'Underdog' Eagles - The New York Times
Where Did Eagles Get Those (Under)Dog Masks From? Here's Where You Can Get Yours – NBC10 Philadelphia
Why Do Eagles Fans Wear Dog Masks? - Thrillist
Why are Eagles' fans wearing dog masks at Super Bowl 2018 vs. New England Patriots?
Philadelphia Eagles proud to be NFL playoff underdogs
Long challenges NFL to donate Eagles underdog T-shirt sales to charity
Where Did Eagles Get Those (Under)Dog Masks From? Here's Where You Can Get Yours – NBC10 Philadelphia
Where Did Eagles Get Those (Under)Dog Masks From? Here's Where You Can Get Yours – NBC10 Philadelphia
Lane Johnson's new Eagles underdog t-shirts benefit Philly schools
Pets First NFL Philadelphia Eagles Dog Sweater, Size Large. Warm and Cozy Knit Pet Sweater with NFL Team Logo, Best Puppy Sweater for Large and Small Dogs, Team Color (PHL-4179-LG)
Here's where you can buy your official Eagles underdog mask