Dental hygiene is important for dogs to avoid issues like bad breath and help lengthen their lives. If plaque builds up on their teeth and gums, it can enter the bloodstream and negatively impact other organs. Regular cleanings and preventative care at home are important for canine dental health. Owners should brush their dog's teeth twice a week using special canine toothpaste, give them chew toys, feed only dry food, and check with the vet if anything seems off.