TL;DR: Paddling is a critical neurological emergency in cats, often indicating a seizure or metabolic crisis. You should contact an emergency veterinarian immediately and, if possible, record a video of the behavior to assist with a rapid diagnosis.
What does it mean if my cat is "paddling" their legs while lying down?
Paddling refers to rhythmic, involuntary leg movements that look like a cat is swimming or running while lying on their side. This behavior is typically a sign of a neurological disturbance where the brain is sending abnormal signals to the limbs. It is often accompanied by other signs such as loss of consciousness, jaw snapping, or loss of bladder control.
Is paddling in cats considered a veterinary emergency?
Urgency Level: High. Yes, this is considered a critical veterinary emergency. Paddling is frequently a symptom of:
- A seizure
- Severe head trauma
- A metabolic crisis, such as low blood sugar or toxin exposure
If your cat is currently paddling or has just finished an episode, contact an emergency veterinarian immediately to prevent further neurological damage or potential respiratory distress.
How does providing a video of the paddling help the veterinarian?
If you can safely do so without delaying your trip to the vet, capturing a short video of the paddling episode is incredibly helpful for the clinical team for several reasons:
- Because these events are often intermittent, your cat may stop paddling by the time you reach the hospital.
- A video allows the veterinarian to see the exact nature of the movement, the duration, and the cat's level of consciousness.
- This visual evidence helps the vet differentiate between a seizure, a heart-related fainting spell, or a vestibular event.
Clinical Context (Merck Veterinary Manual)
Rapid detection of cardiopulmonary arrest (CPA) in an unconscious cat can be difficult. A lack of response to external stimuli or presence of limp body tone are unreliable indicators of CPA. Instead, owners can be instructed to watch for chest excursions and to touch the cornea or eyelids to elicit a corneal or palpebral reflex in an unconscious pet; absence of one or both is indicative of CPA. Compromised breathing manifests with increased respiratory rate and effort, immediately followed by a change in respiratory pattern. Cats may sit crouched on all four limbs with the sternum slightly elevated.
Chapter: Cardiology, Emergency
Source: The Merck Veterinary Manual, 11th Edition (Page 127)