For most aspects that are considered when choosing a dog coat whether your dog is male or female does not matter. The one major consideration you need to keep in mind if your dog is a boy is that some coat’s underbellies may come to close to his penis, making it impossible for him to go or getting wet when he does. When sizing a dog coat for your male dog keep this factor in mind, and look for reviews that will give you an idea of how the coat will sit on his belly.