Since Mother Nature provides the dog with its own outer fur coat you might think why bother with anything else. Little dogs, however, lose their body heat more quickly than the bigger dogs. Small, short-haired dogs like the Chihuahuas and Miniature Pinschers have almost nothing in the way of nature to keep them warm in colder temperatures. For these dogs it is like a necessity to provide them with something extra for those cold, blistery days outside. For other breeds, such as a thick-coated Shih Tzu it can be entirely optional, but will also help the smaller sizes to retain their body heat in colder temperatures.
When purchasing a coat for your dog use the same good sense as you do when purchasing your own coat. Look for good construction. Wool and micro fiber fabric retain warmth. If you live in a climate that experiences cold winters look especially for materials made of wool and fleece. Be sure the coat covers the dog enough to keep him warm.
The coat should fit the dog comfortably around the neck, chest and armholes. Pay special attention to these areas and measurements when purchasing a coat. Coats don