February is National Pet Dental Health Month. There are so many aspects of keeping your dog healthy, but in my opinion, none is more important than brushing their teeth. The American Veterinary Dental Society (AVDS) estimates that eighty percent of dogs have periodontal disease by the age of three. A few years ago, the idea of brushing your dog's teeth was nearly unheard of. While it is gaining popularity, the majority of pet owners still do not brush their dogs' teeth on a regular basis.