Help! My Cat Has Bad Breath (Vet Answered)
This question has been answered by a vet
Veterinarian & Animal Behaviorist
With nearly two decades in veterinary medicine, Dr. Paola brings hands-on experience across multiple species. A graduate of the University of Guadalajara, she specializes in preventive care, animal welfare, and positive reinforcement training.
The Question
“Dear Dr. Paola
I’ve noticed my cat’s breath smells kind of bad lately. She’s still eating and acting normal. Is this something I should worry about?” – Misty
Quick Info
Hi Misty,
Even when a cat is eating well and behaving normally, persistent bad breath, or halitosis, can be an early indicator of underlying dental disease. In cats, the most common cause is periodontal disease, which begins with plaque buildup and can progress to gingivitis, tooth resorption, and even infection beneath the gumline. These issues often develop quietly, so a cat may not show obvious signs of pain or discomfort until the disease is quite advanced.
Less commonly, halitosis can be associated with systemic conditions such as kidney disease or diabetes, especially if the breath has a distinctly metallic or sweet odor. While Misty’s appetite and energy are reassuring, bad breath alone warrants an oral health check. A veterinary exam, ideally including dental probing and possibly radiographs, is necessary to evaluate for periodontal disease or resorptive lesions, which are not always visible on a surface-level look. That’s why it’s important to plan a visit with your veterinarian. Catching oral health issues early helps prevent pain and preserves overall well-being, as dental infections can affect organs like the heart and kidneys over time.
Please get her checked,
– Dr. Paola