I got web already btw in game it says in Pokedex that
is not compatible
The Pokedex for the game does not seem to list ALL compatible Pokemon, especially since Sneasel and Beartic are both in the field egg group (which is the largest egg group). Although Sneasel and Weavile do not list Beartic/Cubchoo as compatible, the Pokedex entry for Beartic shows Sneasel as compatible (https://www.pokemonlegends.com/monsterpedia?id=614
). Again, i would go with what PokemonDB states, since they do list all compatible Pokemon for egg moves.