
It depends how far you want to take it. If you wanted to train in order to work as a dog groomer I believe, as a rule, you do an apprenticeship (sp?) and study for a city and guilds one day a week or something. Thats how it used to be im sure - no doubt it has probably changed now. Although as MB said there are colleges who do grooming as part of a "animal care" course, I think you can also do short courses on grooming at special grooming colleges, dont know much about these though im afraid.
Best of luck :)