TL;DR: If your cat is straining in the litter box, it is a life-threatening medical emergency indicating a potential urinary blockage. Contact an emergency veterinarian immediately, as this condition can be fatal within 24 to 48 hours.
What does it mean if my cat keeps entering and leaving the litter box?
- This behavior, often accompanied by straining or vocalizing, is typically a sign of Feline Lower Urinary Tract Disease (FLUTD) or a urethral obstruction.
- It indicates that the cat feels a persistent, painful urge to urinate but is unable to empty their bladder effectively.
Is it a medical emergency if my cat is straining to urinate?
- This situation is a high-priority emergency, especially in male cats.
- If a cat produces little to no urine, they may have a total blockage that prevents the body from clearing toxins.
- Untreated obstructions can lead to kidney failure, bladder rupture, or death within 24 to 48 hours.
- You must contact an emergency veterinarian immediately.
How can a photo or video help the veterinarian triage my cat?
- A photo of the litter box contents helps the vet check for blood or the size of urine clumps.
- A short video of your cat’s posture allows the triage team to assess the level of distress.
- These visuals help determine if your cat is experiencing a partial or complete blockage before you even arrive at the clinic.
Clinical Context (Merck Veterinary Manual)
Frequent trips in and out of the litter box may indicate a medical or behavioral issue. If medical problems have been excluded or treated and the problem persists, a behavioral history should be taken, including whether elimination is urine or feces, whether urine deposits are vertical (spraying) or horizontal (soiling), duration and frequency of the problem, signalment and temperament of the cat, when and where the cat eliminates, litter box details (number, placement, cleaning, substrate, size), the cat's daily routine, and its home environment. Avoidance might arise because of aspects of the substrate (texture, depth, scent, cleanliness), box (size, shape, hood), or location that reduce appeal; unpleasant experiences at or near the box (e.g., insufficient cleaning, noises, pain due to medical problems); or difficulty in accessing the box. Treatment should focus on providing a litter, box, and site that is most appealing to the cat, improving access (e.g., larger box, ease of entry/exit), identifying and resolving potential deterrents (e.g., undesirable location, fear-evoking stimuli, limited access), and resolving any underlying factors contributing to the soiling.
Chapter: Behavioral
Source: The Merck Veterinary Manual, 11th Edition (Page 1573)