The term 'Canine Protector' can be broken down into two crossword solutions: ENAMEL (6 letters) and Toothpaste (10 letters). ENAMEL is a hard, protective coating on the outside of teeth that helps to prevent decay. Toothpaste is a paste-like substance used to clean and protect teeth, usually containing fluoride. Together, these two solutions form the job description of a Canine Protector, which is someone who helps to protect and care for dogs.