Every business, even the dog grooming business, has a NAICS code! Sometimes a business can have more than one code depending on the nature of its services or products. NAICS is the standard system for classifying industries in the United States, Canada, and Mexico.
For example, If you want the NAICS code for the dog grooming business, go to NAICS (North American Industry Classification System) and type in the keyword "dog grooming". There are "0" results, but, don't get discouraged, there is a link there to go to the "2012 NAICS structure" with codes and titles. Click this link and go down to "81 Other Services (except Public Administration)". When you click the "81" link, go down to "812910 Pet Care (except Veterinary) Services". The NAICS code for your dog grooming business would fall into this code:
812910 Pet Care (except Veterinary) Services
This industry comprises establishments primarily engaged in providing pet care services (except veterinary), such as boarding, grooming, sitting, and training pets.
There are many uses of NAICS codes in doing market research. You can search a number of business databases, websites (including U.S. government census data), and reference books by the NAICS code to compare sales data to the total sales of all companies in the classification, estimate market share and growth potential, determine general performance, and to obtain numerous other statistical information.
Image credit: www.thumbtack.com