TL;DR: Urine spraying is a behavioral communication tool that is usually not an emergency, but immediate veterinary attention is required if your cat exhibits straining, pain, or blood in their urine.
What is cat urine spraying and why does it happen?
Vertical spraying is a specific feline behavior where a cat backs up to a vertical surface, such as a wall or furniture, and releases a small amount of urine while quivering its tail. Unlike traditional urination, spraying is a form of communication used to mark territory or express stress and anxiety. It is common in unneutered males but can occur in any cat regardless of sex or surgical status.
Is my cat's urine spraying a medical emergency?
Urgency Level: Low. In most cases, vertical spraying is behavioral, but it is vital to distinguish it from medical issues. Seek immediate care if your cat exhibits:
- Straining to urinate
- Vocalizing in pain
- Passing blood in the urine
- Inappropriate urination (squatting on flat surfaces) which may indicate a life-threatening blockage
How can a photo or video help my veterinarian triage the behavior?
- A photo of the location and pattern helps the vet determine the height and placement of marks to differentiate between territorial marking and medical incontinence.
- A video of the posture your cat adopts helps confirm if the behavior is true spraying or a physical reaction to discomfort.
Clinical Context (Merck Veterinary Manual)
Urine spraying in cats is defined as the emission of a stream of urine onto vertical surfaces, typically accompanied by tail elevation and quivering, and sometimes foot treading. It is more common in male cats, and neutering can reduce or eliminate the behavior, though some neutered males continue to mark. Underlying causes can include anxiety related to environmental or social changes such as introducing a new cat, changes in routine, renovations, new family members, or unfamiliar stimuli. Management includes addressing underlying anxieties, environmental modifications such as increasing the number and location of litter boxes, cleaning soiled areas with appropriate cleaners, and more frequent litter box cleaning. Punishment is contraindicated due to its potential to increase anxiety.
Chapter: Behavioral Medicine
Source: The Merck Veterinary Manual, 11th Edition (Page 1572)