Certification
- Argentina:Atp
- Australia:PG
- Australia:G (some episodes)
- Belgium:KT/EA
- Canada:PG (video rating)
- Egypt:Not Rated (DVD rating)
- Finland:K-18 (2004, DVD, self applied)
- France:Tous publics
- Germany:12
- Ireland:12 (DVD rating)
- Ireland:PG (most episodes)
- Japan:G
- Mexico:TV-PG (self-applied)
- Netherlands:AL
- New Zealand:PG
- New Zealand:M (season 4)
- Norway:15 (DVD rating)
- Singapore:PG
- Spain:7
- Sweden:7+ (self-applied)
- United Kingdom:PG
- United Kingdom:12 (some episodes)
- United Kingdom:U (some episodes)
- United States:TV-PG
- United States:TV-14 (re-rating)
- United States:TV-G (some episodes)
- United Arab Emirates:15+ (self-applied)