Certification
- Australia:M (some episodes)
- Australia:PG (some episodes)
- Canada:G (Manitoba/Quebec, season 1, DVD rating)
- Canada:PG (Nova Scotia, season 1, DVD rating)
- France:Tous publics
- Germany:0
- Germany:6 (season 1, DVD rating)
- Netherlands:AL
- New Zealand:PG ("Best of Seasons 3, 4, & 5", DVD rating)
- New Zealand:M (seasons 1 and 2, DVD rating)
- United Kingdom:15 ("Best of Seasons 3, 4, & 5", DVD rating)
- United Kingdom:12 (seasons 1 and 2, DVD rating)
- United States:TV-PG