This is probably a reference to Michael Vick, a player for the Philadelphia Eagles who was known for being convicted of running a dog fighting ring.

evazion said:

This is probably a reference to Michael Vick, a player for the Philadelphia Eagles who was known for being convicted of running a dog fighting ring.

It's more likely a reference to the Philadelphia Eagles wearing dog masks in 2017.

modcar342 said:

It's more likely a reference to the Philadelphia Eagles wearing dog masks in 2017.

You're right. Mike Vick was #7. Currently #90 is Jordan Davis and #17 is Nakobe Dean. Funnily enough, they both played in college on the Georgia Bulldogs, and Jordan Davis, whose jersey Fuwawa is wearing, is known for being very big, while Nakobe Dean is considered small for his position. I wonder how much of this was intentional.