Not sure how mainstream furries are. Sure, they have conventions and whatnot but do you expect to see one on a box of cereal anytime soon? Probably not.
Do you mean Chip the Wolf is actually a human who wears a wolf costume? Because he looks like a cartoon character to me, so he doesn't qualify as a "furry" in my mind.
I think the charitable interpretation is that parent-poster meant it like how cereal boxes have featured famous athletes, as opposed to brand mascots.
For example, Frosted Flakes has "Tony the Tiger", but he is widely understood to be a fictional tiger, rather than an endorsement by a real human who got famous for wearing a tiger-suit.
