The New Adventures of Lassie - Season 2 Episode 7 White Out
Overview: While Harvey is on vacation in the Caribbean for the winter, Zoe has to help her father to secure the park before the arrival of a blizzard. When Zoe leaves the rangers' station to save a wolf-cub, she becomes trapped in the snow storm. Fortunately, Harvey is never far away and Lassie, as ever, is there to help.