Dogs by Dave - Dog walking and pet sitting service available in New York City. - http://dogsbydave.blogspot.com/
LeashLine - Offers dog walking and in-home pet care. Lists services and rates. Also provides general advice for NYC pet owners. - http://www.leashline.com
Big City Dogs Dog Training - Certified canine behavior and training specialist offers obedience, advanced obedience and behavior modification training services. - http://www.bigcitydogs.net