Dogster , a networking site for all things dogs, is reporting a 20% increase in ad sales this year,  according to reports . The company credits this to its direct relationships with petfood, supply and other consumer brands.

Many of the ads are formatted as coupons and contests, including a recent coupon from Royal Canin Cat Food, resulting in 5,000 takers. Dogster and  Catster  charge US$10-US$12 CPMs for ads on the sites.

The site also is now sellings ads for the Cheezburger Network, including  IHasaHotdog  and  ICanHazCheezburger .