A male cat straining in the litter box is an emergency
Written by Dr. Cassie Knapp, DVM
Co-Founder & Chief Medical Officer, UrgentPaws
Published August 11, 2026 · Reviewed September 10, 2026
The short version
- A male cat straining to urinate and producing little or nothing may have a blocked urethra. This is life-threatening and needs care immediately, not in the morning.
- It is frequently mistaken for constipation. Straining in the litter box looks nearly identical either way.
- Once blocked, toxins and potassium build up quickly and can affect the heart within roughly a day.
- Female cats block far less often, but straining still warrants being seen the same day.
If this sounds like your cat, go now. A blocked cat needs sedation, a urinary catheter, and hospitalization on fluids, so head to a 24-hour ER and call on the way so their team is ready. If an UrgentPaws is closer, come to us and we will start stabilizing treatment and arrange the transfer. If you are unsure whether what you are seeing counts, phone us and describe it — we would far rather talk it through than have you wait.
What it looks like
- Repeated trips to the litter box with little or no urine produced
- Straining, often in an obvious hunched posture
- Crying or howling in or near the box
- Licking at the genital area far more than usual
- Urinating outside the box, in sinks, baths, or on cool floors
- Blood-tinged urine
- As it progresses: vomiting, hiding, refusing food, and lethargy
Why male cats block
The male feline urethra is long and narrow, and it tapers near the tip. Crystals, mucus, inflammatory debris, or a small stone that a female cat would pass without difficulty can lodge there and stop urine flow entirely. Neutered males in middle age are the classic patients, though it can happen to any male cat.
When urine cannot leave the body, waste products the kidneys would normally clear build up in the bloodstream instead. Potassium rises, and elevated potassium affects heart rhythm. That is the mechanism that makes this a matter of hours rather than days.
What treatment involves
A blocked cat is sedated so a catheter can be passed to relieve the obstruction, then kept on intravenous fluids while bloodwork is monitored and the bladder settles. Most cats stay in hospital for a couple of days. Because that involves an overnight stay, a confirmed blockage belongs at a 24-hour ER. The urgent, stabilizing treatments can be performed at an urgent care and then a patient transfer can be coordinated to a 24-hour hospital for ongoing care.
Cats who have blocked once are at risk of doing so again. Prevention centers on water intake, diet, litter box management, and reducing stress at home — worth a conversation with your regular veterinarian once the crisis has passed.
Dr. Cassie Knapp, DVM
Co-Founder & Chief Medical Officer
Dr. Cassie Knapp is a veterinarian with 17 years of clinical experience and extensive emergency room and urgent care experience. See full bio
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The best urgent veterinary experience I have had in a very long time. My dog had a suspected infection, but my vet couldn’t get her in and they recommended urgent paws. Since it wasn’t life-threatening, I felt like I could wait until 3 PM to get in. I was able to reserve my appointment time at 3 PM. Walked right in as soon as they opened and they took me immediately to a room no waiting whatsoever. The facility was very clean and modern and I liked that I could see them pulling my dogs blood work since the patient room doors have a window to see the technician area. The staff was all really friendly. You could tell they really love the dogs they were working on. I was kept informed of the progress and it all went very quickly, believe it or not I was in and out in under two hours. That never happens at an Emergency vet! Prices were about what you can expect to see an Emergency Vet. I don’t hope to be back, but I take great comfort in knowing this practice is available in the community and will be there when I need it. Thank you to the staff for taking great care of my Birdie girl!
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Erin V.
I took my 17-year-old cat to UrgentPaws for constipation, and the staff was so friendly and kind to all of us. Dr. Lauren Banales was really sweet and understanding about his situation. She put together a treatment plan just for him, and thankfully he’s doing better since we went. The office is super clean and well-equipped. We got his blood work and ultrasound results the same day. Thanks to everyone at UrgentPaws for making a stressful situation a bit easier.
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I took my cat to Urgent Paws to be seen for an eye and ear concern. I was immediately greeted by Christine (VT) and taken to an exam room. Christine was friendly and welcoming while explaining the services offered, including fees. Dr. Colon examined my sweet boy and was just as friendly and welcoming as Christine. My cat has been known to be slightly skittish during vet visits, but he was calm as could be during the whole process. I appreciated Christine and Dr. Colon explaining each step and answering all of my questions. Amazing service by staff who made it apparent they love their jobs.
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Dr Grenus and the team at this urgent care were amazing with my dog Renee. They made me and my dog comfortable and explained everything so clearly and we're very helpful. I 100% would recommend anyone to take there pet to this urgent care.
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BEST VET CARE EVER!!! I'm extremely ashamed that it's taken me so long to write this, but I have been thinking about UrgentPaws for months. They set the standard for exemplary care! Pros: *Quick service: I came during the holiday season and waited barely 5 minutes to get into a room *Caring staff: My cat didn't want to leave! Everyone was cuddling him and giving him treats. *Transparent care: all the work is done in a room surrounded by windows, owners can see exactly what's happening and more importantly how their pets are being treated! *Rational doctors: yes that's right! The vet doesn't push unnecessary products or services. They talk through your concerns and recommend what's right for you and your situation. It's not a big sales pitch; it's genuine concern! Cons: I wish they were my primary care vets instead of only an urgent care. I would exclusively go to them. This is the best experience I've had in over 20 years of bringing my dogs or cats for vet care. My little ones are all healthy right now (fingers crossed), but it's a huge relief for me to know that if something happens, I can get care at UrgentPaws. It's one less thing to stress about during the anxiety of sickness or injury.
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Lucy S.
I found this clinic on Google because my dog was having a sudden allergic reaction starting last Thursday and I needed help urgently. I'm very satisfied with my experience. My primary pet clinic had prescribed a liquid steroid, but after taking it, my dog threw up three times on Saturday. Since last Thursday, he had been extremely itchy, crying through the night, scratching nonstop, trembling, and barely sleeping. By Sunday morning, he was trembling so much from the itchiness that I decided to look for another clinic and brought him here. They saw us right away. We met with the technician first, then spoke with the doctor. After discussing and explaning his symptoms everything, the doctor prescribed a steroid tablet and gave us a clear, detailed treatment plan. The doctor answered all of my questions thoroughly and confidently, which really helped me feel more at ease. I started following the plan yesterday afternoon, and my dog finally slept through the night for the first time in four days😭😭😭. Today, he was feeling so much better that he just even brought me a toy and wanted to play!!!! He had lost one pound in just four days, so I was really worried, but seeing him regain his energy made me so happy. I’m very grateful for the care we received here and would definitely recommend this clinic!!!!!!
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Elizabeth M.
I took my 17 year old dog for ear infections and used the save my place on the website it was great. Everyone was very nice to us they are not pushy with testing and things you don’t need. We saw Dr. Wong super nice. Pricing is reasonable. Most likely I will take my girlie back for her recheck. I would definitely recommend and I have been a frequent flyer to emergency vets!
Jacky O.
The care I received here was incredible… we have fed this cat for 6months now… and noticed 2 days straight she wouldn’t eat … also when I drove up to the drive way she didn’t move. After capturing , we came here! The vet pretty much told me from the start she would need to be hospitalized. She still ran test, and it was a lot more affordable then the hospital. Money aside, they even shaved her down and gave her a good cleaning. She had maggots growing at her eyes … just really rough shape. Where they treat the animals is in the center of the clinic, everything is windows. I really appreciate being able to see what they are doing. Not saying they are malicious, but something about being able to see your pet during their treatment , just gives more peace of mind. The office is very clean everything is well kept up. Honestly I was suppose to go to another hospital, but now they close at 7, but found this place instead. Honestly, everything worked out for the better. The vet even called a hospital and gave the vet on call a whole walk through of the case. You don’t understand how wonderful that was. To be referred for further treatment and not have to sit their and try to explain so much information. It’s a complicated case, she was on the phone for at least 15 mins… she didn’t have to do that. I am just so grateful, moving forward this is my new emergency go to. I can’t say enough good things about this place , hence the long review. Anyways, thank you guys !!!! Fluffers is now part of the family, long journey ahead, but will be given a fighting chance
Matt S.
We took our very sick cat here and were instantly put in our own private room. There is no waiting room they take you back immediately. All the staff was attentive and caring. The doctors are awesome and the staff is awesome we were worried sick and everyone there helped us know our baby was getting taken care of would definetly recommend to family and friends. Thank you Jimmie, Dr. Cabrera, Val , Dr. Patel and Sam!
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I couldn’t get an appointment with my regular vet, so I found UrgentPaws online and was able to get in right away when it was time to say goodbye to my sweet 16½-year-old dog, Stella. From the moment we arrived, the entire staff was kind, compassionate, and respectful. They brought us into a quiet, comfortable room with a couch, soft blankets, and calming music playing in the background. They even offered Stella whipped cream and a Hershey’s Kiss as a special treat. She was too sick to enjoy them, but the gesture was incredibly thoughtful and showed how much they cared. They carefully explained the process, went over the options for her ashes, and even collected payment beforehand so I wouldn’t have to think about that afterward. Although it was one of the hardest days of my life, I’m so grateful for the kindness and compassion they showed Stella and our family. They made sure she was comfortable and at peace, and I’ll always be thankful for the care they gave her in her final moments.
Carrie V.
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Madeleine K.
Really impressed by this place and the excellent and caring staff. We needed help fast on a Saturday when our regular vet was closed. Kira welcomed us into an examination room right away and took a very thorough history, and then Dr Martinez did a very thorough exam, explaining everything and asking lots of thoughtful questions. Everyone was kind and supportive, yet swift and efficient. The atmosphere of the place is very calm and everyone was caring and supportive. The cost of the medicine was no more than through our regular vet. I would definitely come here again. Highly recommended.