Certification
- Australia:PG
- Australia:G (most volumes)
- Canada:G (Manitoba/Quebec, DVD rating)
- Canada:PG (Nova Scotia, DVD rating)
- Canada:TV-Y7 (self-applied)
- Japan:G (self-applied)
- New Zealand:G (most volumes)
- New Zealand:PG (one volume)
- United Kingdom:U
- United States:TV-Y7