Dog coats are not a good idea all the time. Some breeds truly don’t need them and can overheat if put in a dog coat even on the most frigid day. Likewise, if you put your dog in a coat on a day that is too hot for it, it can be dangerous to their health.
Other dangers are presented when the dog's coat is too large or too small. A too large coat can trip them, while a small coat can restrict their bodies or come off at a bad time. Finally, all dog coats have the potential to chafe your dog around their legs and across their belly. When your dog starts to wear a new coat make sure to check these areas and ditch it immediately if you find spots where chafing is occurring.