I am looking for "dofollow" dog related blogs to post comments on to help my PR and traffic. What method can I use to finds these?
You can also try a variety of Google searches such as 'dog blog', 'pet blog', 'k9 blog', 'dog submit comment', etc. Repeat the same searches on Yahoo or MSN to get more. Blog commenting is one of the less effective link building techniques.
The best method is to ignore PR and Dofollow. Just find the blogs and start socializing with them. If you are sincere, they will respond in kind. Join up with BlogCatalog & MyBlogLog and start networking with other pet related blogs. They have Groups you can start or join at these sites, get involved with them. Eventually, the links will start coming in naturally. Needless to say. All of that will get you targeted traffic as well. Quit chasing links ... chase people!
Use the google search.. Use the keywords like "dog blogspot" , "dog blogger", "dog blog" ,etc and you'll find many blogs related to dog niche.