Certification
- Argentina:13
- Australia:PG
- Australia:M (seasons 7-8)
- Brazil:12
- Brazil:Livre (some episodes)
- Brazil:10 (some episodes)
- Canada:PG
- Egypt:Not Rated
- Finland:S
- Finland:K-7 (season 1, DVD cover)
- Finland:K-12 (season 2, season 3, DVD release)
- France:Tous publics
- Germany:12 (season 1)
- Germany:6 (seasons 2-6)
- Greece:K-8
- India:12+ (self-applied)
- Indonesia:17+
- Ireland:12 (some episodes)
- Ireland:PG (some episodes)
- Ireland:G (some episodes)
- Israel:13 (self-applied)
- Italy:T
- Japan:G (self-applied)
- Mexico:B-15
- Netherlands:AL (season 1, season 2, season 3)
- Netherlands:9 (season 4)
- Netherlands:6 (season 5, season 6, season 7)
- New Zealand:PG (seasons 1-6, DVD rating)
- New Zealand:M (seasons 7 and 8, DVD rating)
- Norway:12
- Philippines:PG-13
- Poland:13 (self-applied)
- Portugal:12AP
- Russia:16+
- Singapore:M18
- Singapore:R21 (Netflix: series level)
- South Africa:13 (seasons 1 and 3)
- South Africa:PG (seasons 2 and 5)
- South Africa:7-9 (seasons 4 and 6)
- South Korea:15
- Spain:13
- Sweden:13+ (self-applied)
- Thailand:13+ (self-applied)
- Turkey:13+ (self-applied)
- United Kingdom:12 (most episodes)
- United Kingdom:PG (some episodes)
- United Kingdom:U (some episodes)
- United States:TV-PG (original rating)
- United States:TV-14 (some episodes)
- United Arab Emirates:13+ (self-applied)