Certification
- Australia:PG
- Brazil:10 (season 1)
- Brazil:Livre (season 2)
- Canada:PG (Manitoba/Nova Scotia/Ontario)
- Canada:G (Quebec)
- Canada:PG (TV rating)
- France:Tous publics
- Germany:6
- Ireland:G (some episodes)
- Ireland:PG (some episodes)
- Italy:T
- Japan:G
- Mexico: G (DVD rating)
- Netherlands:AL
- New Zealand:PG
- Poland:12 (self-applied)
- Russia:16+
- Singapore:PG (season 1, season 2)
- South Africa:7-9 (L, season 4, DVD rating)
- South Africa:PG (seasons 1-3, DVD rating)
- Spain:7
- Sweden:13 (self-applied)
- United Kingdom:PG
- United Kingdom:12 (one episode)
- United Kingdom:U (some episodes)
- United States:TV-PG
- United States:TV-14 (re-rating)