Ferland started her career in commercials at the age of two. She made her movie debut at age 4 in the TV-movie Mermaid, for which she received a Daytime Emmy Award nomination, making her the youngest nominee in Emmy history. She has since made guest appearances in several television series, including Stargate Atlantis, Dark Angel, Stargate SG-1, Smallville and Supernatural, and has appeared in films including They and Trapped. In 2005, she starred in the Terry Gilliam drama Tideland, for which she received a Genie Award nomination in the Best Actress category. Later, she appeared in the 2006 film Silent Hill, an adaptation of the well-known video game, and had a supporting role in Good Luck Chuck for Lions Gate Entertainment. In 2006, she filmed the movie Case 39 opposite Renée Zellweger; however, because of a lengthy post-production, it was not released until 2009.