Planet Dog's Doglopedia came up with a list of the top 20 droolers in alphabetical order.  The AKC should come up with an annual contest to determine the droolest dog and breed.
 
1. Basset Hound
2. Black and Tan Coonhound
3. Bloodhound
4. Bluetick Coonhound
5. Boxer
6. Bullmastiff
7. Dogue de Bordeaux
8. English Bulldog
9. English Setter
10. French Bulldog
11. Great Dane
12. Great Pyrenees
13. Irish Water Spaniel
14. Kuvasz
15. Mastiff
16. Neapolitan Mastiff
17. Newfoundland
18. Redbone Coonhound
19. Saint Bernard
20. Shar-Pei