Certification
- Australia:G (some episodes)
- Australia:M (some episodes)
- Australia:PG (some episodes)
- Canada:PG (Manitoba/Nova Scotia)
- Japan:G
- New Zealand:G (most volumes)
- New Zealand:PG (volumes 2 and 7)
- United Kingdom:PG (episodes 1-4)
- United Kingdom:U (one volume)
- United States:TV-PG