If you recently adopted a kitten or full-grown cat, you want to take proactive steps in keeping it healthy. There are times throughout your pet's life when it will need to be seen by a veterinarian. Most pet owners bring cats to see their veterinarian at least on a yearly basis for a routine checkup. There are other times, however, when your cat may need medical assistance. Here are indicators to aid in prompting you to make a phone call to your cat's practitioner to schedule an appointment.