To detect health issues in cats at an early stage, daily observation habits are key. Here’s a summary of the essential signs and responses that pet owners should know.



| Item | Mild | Moderate | Severe |
|---|---|---|---|
| Appetite | Slightly decreased | Eats almost nothing | Eats nothing at all |
| Activity Level | Tends to sleep more | Movement noticeably decreased | Barely moves |
| Defecation Frequency | Uses places other than the litter box | Stays in the litter box for a long time | No defecation for over 24 hours |
| Respiratory Status | Breathing similar to usual | Breathing becomes rapid | Panting and difficulty breathing |
This table helps you understand the stages of early detection of health problems in cats. Recognize the changes from mild to severe.

Signs Requiring Immediate Veterinary Visit
If your cat shows any of the following signs, please visit a veterinary clinic within 24 hours, as it could be an emergency. Immediate treatment is especially necessary if your cat is experiencing severe pain or difficulty breathing.



A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.
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[1] Vogt AH, Rodan I, Brown M, et al. (2010). AAFP-AAHA: feline life stage guidelines. J Am Anim Hosp Assoc, 46(1):70-85.
[2] Veterinary Guide to Preventing Behavior Problems in Dogs and Cats (2023). Chapter 3: Early Detection and Prevention.
[3] Feline Emergency and Critical Care Medicine, 2nd Ed. (2008). Stockham SL, Scott MA. Ames, Iowa: Blackwell Pub.