http://www.thebark.com/content/submission-guidelines

With each issue, we seek to bring our readers a literate and entertaining spectrum of dog-centric articles and stories. Articles and stories should not exceed 2,000 words. Ideally an article should be no longer than 1,200 words, and will stand a better chance of publication if it is below this limit. We also accept short pieces (less than 600 words) on general tips, how-to and other topics. Pays around 20 cents/word.