With Mistralton City just a few yards away, Ash and company decide to take a break when his Oshawott started this fight with Tepig by stealing a piece of his Pokemon food. Bad move on their part as they get attacked by Bouffalant. Iris, Snivy, Oshawott, Tepig and Axew are separated from Ash and Cilan while trying to get away. She find a Nurse Joy wearing a blue curly wig while her Audino wears a green curly wig, which Iris thought was ridiculous. She explains that the Bouffalant won't attack anyone who has a curly wig because it would think that their part of the herd. So Iris, Oshawott, Tepig, Axew and Snivy had to swallow their pride and wear curly wigs. Can they get through the Bouffalant Territory without being spotted and reunited with Ash and co.? Yes. And will Oshawott and Tepig comprimise to each other and work together instead of fighting? Yes.
Nurse Joy and Audino with curly wigs
"We even have a supply of wigs for all your Pokémon."
Iris and Axew with curly wigs "Don't you think this is a bit much?"
When Iris gets her hair zapped and static after being hit by Bouffalant's Wild Charge, this would mark a second character who gets its hair static by an electric type move. The first was Dawn whose hair gets zapped by her own Pachirisu with Discharge.
This is the second time Ash looked up Bouffalant on the Pokedex. The first was BW054: Ash Versus The Champion! but the difference is, it said that if the Bouffalants are aggressively depending their territory, they'll charge anything and everything in their way. Which means Ash and co. were accidentally trespassing into the area.
Ash and co. may have seen one Bouffalant with Alder once in BW054: Ash Versus The Champion! but this is even worse when they encountered many of them when they were wild in the wilderness.