Urgent: Blocked Cat

Cat urinary blockage is an emergency. Call us now.

A blocked cat cannot pass urine, and without treatment the condition can become fatal within a day or two. If your cat is straining in the litter box with little or no urine, call Encino Pet Hospital & Emergency at (818) 922-2209 and come in right away. We see cats for urinary blockage same day, seven days a week.

7 days
Open 7:30 AM to 7:30 PM
Call Us Right Away If

Signs your cat may be blocked.

Male cats are at highest risk because their urethra is long and narrow, but any cat straining to urinate needs attention the same day. Watch for:

  • ✓Straining in the litter box with only drops of urine, or none at all
  • ✓Going in and out of the litter box again and again
  • ✓Crying, howling, or growling while trying to pee
  • ✓Licking the genital area over and over
  • ✓Urinating outside the box, sometimes with blood
  • ✓Vomiting, not eating, or hiding
  • ✓Weakness, lethargy, or collapse

Straining is often mistaken for constipation. When in doubt, call us. Do not wait to see if it passes, and do not give human medications. Our emergency and urgent care page explains what happens when you arrive.

If this happens after 7:30 PM, go to the nearest 24-hour emergency hospital now rather than waiting for us to open. A blocked cat cannot safely wait until morning.

Why It Happens

What causes a blocked cat?

The urethra, the tube that carries urine out of the body, becomes plugged. Urine backs up into the bladder, and the kidneys can no longer clear waste and potassium from the blood.

As potassium builds up, it can slow the heart to a dangerous rhythm. That is why a blocked cat can go from uncomfortable to critical in hours. Common reasons the urethra plugs include:

  • ✓Urethral plugs made of mucus, cells, and crystals
  • ✓Small bladder stones that lodge in the urethra
  • ✓Feline idiopathic cystitis, a bladder inflammation often linked to stress
  • ✓Swelling or spasm of the urethra

Risk is higher in male cats, indoor cats, cats that are overweight, and cats that drink little water. Stress at home can set off cystitis flare-ups.

At Your Visit

How we treat a urinary blockage.

A blocked bladder is usually easy to feel, and it is painful, so we move quickly to stabilize your cat.

Bloodwork checks kidney values and potassium, and many results come back in under an hour. X-rays look for stones, and an ultrasound can show the bladder and kidneys in more detail. X-ray and ultrasound studies are read by a board-certified veterinary radiologist.

In general terms, the blockage is relieved under sedation or anesthesia, and a urinary catheter is placed so the bladder can drain. IV fluids help flush the kidneys and correct the blood chemistry, and your cat receives pain relief. Most blocked cats need a hospital stay with close monitoring while the catheter is in place. Learn more about pet hospitalization.

Once home, your cat may need a urinary diet, more water in the diet, and a calmer routine. Some cats block again, especially in the first weeks. If stones are found, bladder stone surgery may be recommended, and for cats that block repeatedly, our team will set up a surgical consultation to discuss options.

Cat owners come to us from across the Valley, Santa Clarita, Palmdale, Lancaster, and Ventura. If you are driving in from Palmdale or Lancaster, call as you leave so we are ready when you arrive.

Common Questions

Blocked cat FAQ.

How do I know if my cat is blocked?
The key sign is straining in the litter box with little or no urine coming out, often with crying, frequent trips to the box, or licking the genital area. A blocked cat may also vomit, hide, or seem weak. If you see these signs, especially in a male cat, call us right away.
How long can a cat live with a urinary blockage?
A cat with a complete urinary blockage can die within a day or two without treatment, and some cats become critical sooner. Call us at (818) 922-2209, or after 7:30 PM go to the nearest 24-hour emergency hospital.
Can female cats get blocked?
Urinary blockage is far more common in male cats because of their narrow urethra. Female cats can still develop bladder inflammation, infections, or stones that cause straining and bloody urine. Any cat straining to pee should be seen the same day.
Will my cat need to stay in the hospital?
Most blocked cats need a hospital stay so the catheter, fluids, and blood values can be monitored closely. The length of stay depends on how quickly your cat recovers.
Can a cat get blocked again?
Yes, some cats block again, especially in the first few weeks after treatment. A urinary diet, more water in the diet, less stress, and follow-up visits help lower the risk.

Is your cat straining to pee? Call now.

Blocked cats need care right away. Call (818) 922-2209 and head in, we are open every day from 7:30 AM to 7:30 PM.