As part of its ongoing efforts to promote every single Pokémon out there, The Pokémon Company has shared special content dedicated to Cubchoo:
Did you know? When this Pokémon is in good health, its snot becomes thicker and stickier. It will smear its snot on anyone it doesn’t like. It sniffles before performing a move, using its frosty snot to provide an icy element to any move that needs it.
Source: @Pokemon
Pokémon Blog 