"Big Dogs and Cold Weather: The Importance of a Good Dog Coat" is an article that highlights the importance of keeping big dogs warm during cold weather by providing them with a good dog coat. It mentions that big dogs have more surface area to keep warm, so they can be more affected by cold temperatures than smaller dogs. A dog coat can provide an extra layer of insulation to help them maintain their body heat and keep them comfortable in colder temperatures. Additionally, it will also protect the dog's skin and coat from harsh weather conditions such as rain, snow, and wind. It also mentions that a coat can provide an extra layer of protection to help prevent injuries that can occur while they are outside.