Pokemon: Pikachu no Fuyuyasumi (2001) - episode 2 - 21 Dec, 2000

When Pikachu & Co. Make a Snowmen in the Snow, Totodile makes a 'Snow'lax. After going to sleep, the 'Snow'lax comes to life and asks Pikachu & Co. to help it go back to its group on 'Snow'laxes. (Source: Anime News Network)