Dental issues in puppies differ from those in adult or senior dogs primarily due to developmental stages and dental care needs. Puppies may experience teething discomfort and are prone to rapid plaque buildup as they explore their environment with their mouths. Adult dogs often face periodontal disease from untreated plaque and tartar, leading to gum recession and tooth loss. Senior dogs are more susceptible to dental diseases due to age-related factors like weakened immune systems and tooth wear. Early dental care, including regular brushing and veterinary exams, is crucial throughout all life stages to prevent oral health problems.