Why Do Cats Open Their Mouths? Understanding Cat Behavior and Health
Cats often present a calm demeanor, but sometimes, they display strange and unusual facial expressions, such as suddenly opening their mouths. While somewhat familiar, this behavior can be concerning for cat owners. Let’s explore cats opening their mouths and what it may mean for their health.
Why Do Cats Open Their Mouths?
Cats primarily breathe through their noses, so a healthy cat rarely breathes through an open mouth. If your cat demonstrates this behavior, it can be worrying. Here are several possible causes for a cat to open its mouth:
- Flehmen Response
If a cat opens its mouth after smelling something, it’s often a normal reaction known as the Flehmen response. In this behavior, a cat may appear shocked or frozen as it takes in the scent. The Flehmen response occurs because Jacobson’s organ, which detects pheromones, is near the upper teeth. This reaction typically lasts only a few seconds. However, if your cat continues to display mouth-opening behavior, it may indicate a different issue. - Threat Display
Cats might open their mouths to display aggression or threaten another animal or person. This behavior indicates they are preparing to defend themselves. If a cat is genuinely angry, it may show its teeth and hiss loudly. - Open-Mouth Breathing
While cats usually breathe through their noses, an open mouth with breathing may indicate difficulty in nasal breathing. If your cat’s breathing rate exceeds 20-40 breaths per minute, it is advisable to seek veterinary attention immediately. Rapid breathing can signal an emergency, including heatstroke or respiratory distress. - Dental Discomfort
If your cat is not showing signs of distress but is drooling or shows pain while eating, there could be an issue with its oral health. Common oral conditions like gingivitis or periodontal disease can cause swelling and pain, leading your cat to keep its mouth open. If you notice signs like redness in the mouth, bad breath, or swelling, it is essential to have your cat examined promptly.
When to Be Concerned About Mouth Opening
If your cat occasionally opens its mouth, there’s usually no cause for alarm. However, if this behavior persists, it’s crucial to consider potential respiratory or oral health problems. In such cases, seeking veterinary care is advisable for your cat’s well-being.
