Guinea pigs generally don't need frequent checkups and vaccinations unless health issues or signs of illness surface. It's recommended to seek professional veterinary care if you notice any change in behavior, eating habits, appearance, or any other abnormalities. Annual comprehensive wellness checkups can be beneficial as preventive measures, particularly for senior guinea pigs (5 to 6 years and above).
When in doubt, always consult with a qualified and experienced veterinarian for personalized advice on taking care of your guinea pig and their specific needs. Regular observation, care, and maintenance in their environment can also assist in their long-term well-being and prevention of any potential health issues.