11 species carry Shield Dust as a normal ability

Effect, in PokéAPI's words

“Protects against incoming moves' extra effects.”

As a normal ability

Species	Slot	Note
Caterpie	Normal
Weedle	Normal
Venomoth	Normal
Wurmple	Normal
Dustox	Normal
Scatterbug	Normal
Vivillon	Normal
Cutiefly	Normal
Ribombee	Normal
Snom	Normal
Frosmoth	Normal

Elsewhere in PokéAPI

1 more holder without a page here

Alternate forms and other species that PokéAPI lists with Shield Dust.

Ribombee Totem