Subcategories:
Dogs 
Virginia based retailer of dog clothing and accessories for all sizes and breeds. Including dog sweaters, dog jackets & coats, dog dresses, and harnesses.
http://www.bestdresseddogs.com/
2. Chew On This
Gourmet, all-natural, healthy homemade dog treats. Also offers fun dog toys and quality pet supplies. Based in California, US.
http://www.chew-on-this.com/
Designer dog coats in western Bark-hard styles & Italian wool plaids. Located in Philo, California.
http://www.chezbebedogcoats.com/
Online retailer of the silent training choke collar. Located in Sweden.
http://www.trainingcollar.com/
5. Dog Toys UK
Dog toy store in the UK selling a large range of dog toys and dog training aids.
http://www.dog-toy.co.uk/
Revolutionary dog and puppy litter box products, fulfilling the needs of busy urban pet owners (with limited space for their dogs' business). Based in Denver, Colorado.
http://www.doggysolutions.com/
Sells a variety of natural, organic and holistic dog food, treats and supplements, as well as eco-friendly dog supplies such as collars, leashes, beds, toys, and grooming supplies.
http://www.globaldognaturalpetproducts.com/
Online retailer of nutritious food and supplements, along with toys, for your dog.
http://www.healthydoghouse.com/
Montana, USA based company offering fabric dog products including belly bands, carriers, and dog jackets.
http://www.kennelkomforts.net/
Compassionate efficient approach to dog training. This will give you immediate results using positive, non-force training methods. Includes DVD's, pay-per-view online video clip library, and a selection of free training materials.
http://www.dogwhispererdvd.com/
Specializing in clothing and accessories for small breed dogs. Includes house training tips. Based in Alberta, Canada.
http://www.pawsitivelypamperedpups.com/
12. Pet Dreams
New York based retailer of dog crate covers and pads, and Sleep-ezz dog beds. Also offers crate training tips, articles, and forums.
http://www.petdreams.com/
13. Puppy Stairs
High quality pet stairs and dog ramps to help injured and frail small and large breed animals get on and off furniture.
http://www.puppystairs.com/
A unique fleece dog blanket that is encased, like a sleeping bag. Oder online, by mail, or via email.
http://www.roverwrap.com/
Sells homemade dog treats that promote health and longevity. All treats are made with 100% certified organic ingredients. Based in Woodridge, IL.
http://www.theorganicbarkery.com/
Nebraska, US based supplier of dog clothing and accessories for both small and large dogs. Products carried include health and beauty items, toys, and treats. Also offering free dog training tips.
http://www.dogbritches.com/
Dog boutique that provides pet lovers with the unique dog apparal and accessories.
http://www.uniquedogclothing.com/