Here is a top 10 list of the best selling pet costumes in 2010 as tracked by the National Retail Federation.
1. Pumpkin
2. Devil
3. Witch
4. Hot Dog
5. Bee or Cat (It was a tie in this category)
6. Dog
7. Superpet
8. Ghost
9. Pirate (Interestingly, this is also one of the top halloween costumes of 2010 for people!!)