Why straining or inability to pass urine needs urgent veterinary advice. Use this page to decide what to gather before you call and which warning signs should move quickly.
A pet who is trying to urinate and producing little or nothing may be in a time-sensitive emergency. This is especially important for male cats, where blockage can become life-threatening.
Straining can look like constipation, toileting behaviour or repeated small accidents. The key question is whether urine is actually passing and whether the pet is painful, vomiting, hiding or weak.
Emergency signs are not always tidy. A pet may have one obvious problem, but the risk often depends on the whole picture: breathing, gum colour, pain, alertness, recent trauma, toxin exposure, appetite, hydration and toileting.
Check the tray, yard or bedding if you can do so quickly, but do not wait for perfect proof. Do not give leftover pain relief or antibiotics while deciding what is happening.
Keep the handling simple and calm. If your pet is painful, frightened, weak or struggling to breathe, repeated checking can make things worse. Phone early so the team can help you decide how to move them safely.
We may need to assess the bladder, pain, hydration, urine, kidney values and whether catheterisation, fluids, pain relief or imaging is needed.
Urgent care begins with the problems that threaten life or comfort first. Once the patient is safer, we can make better decisions about imaging, blood tests, medication, observation, surgery or referral.
A pet may squat repeatedly, visit the tray often or look as if they are trying to toilet, but the urgent question is whether urine is actually coming out. Posture alone can be misleading.
In cats, a blocked bladder can look like constipation or repeated litter tray fussing. If you cannot confirm urine is passing, especially in a male cat, treat the situation as urgent.
Leftover pain relief, antibiotics or anti-inflammatories can mask signs, cause side effects or delay the care a blocked or painful pet needs. They also do not answer whether urine can pass.
The safest help is to call, describe what you are seeing, and let the team decide whether your pet needs emergency assessment.
If a blockage is present, care may include pain relief, blood and urine testing, fluids, bladder support, catheterisation, monitoring and later discussion about diet or recurrence risk.
If urine is passing but inflammation, infection, stones or kidney disease are concerns, testing helps choose the right treatment rather than guessing from the outside.
The danger does not always end once urine passes again. Some pets need monitoring for kidney values, electrolytes, pain, appetite, recurrence and how well they tolerate medication or diet changes.
Families should know what signs mean relapse: repeated tray visits, crying, blood, licking, vomiting, hiding or producing only tiny drops.
When you call, start with the most urgent-looking sign, then give the timing. For example: trouble breathing for ten minutes, vomiting six times since breakfast, no urine since last night, hit by a car one hour ago, or possible toxin exposure at noon.
It also helps to say whether your pet is bright or flat, eating or refusing food, walking or unable to stand, breathing normally or with effort, and whether the gums look pink, pale, grey or blue.
If the signs sound unstable, we may recommend urgent assessment even before every detail is known. That is because some problems can only be made safer with oxygen, pain relief, fluids, monitoring, imaging or hands-on examination.
Coming in quickly does not mean every outcome is already decided. It means the patient needs a safer place for the next decision to be made.
The practical message is simple: if urine may not be passing, call now.
A change that is still treatable can become more difficult once shock, dehydration, pain or organ stress develops. That is why the safest advice is often to call before the situation becomes clearer.
Straining with little or no urine, repeated attempts, crying, vomiting, collapse or a painful swollen belly should prompt immediate contact.
If you are unsure whether the sign is serious enough, call. A short triage conversation is usually safer than sitting with a worsening pet while trying to decide from a webpage.
Tell us what happened, when it started, what your pet weighs if you know, whether medication or toxins are involved, and whether breathing, gum colour, urination, appetite or alertness has changed.
Photos, product packets, videos or previous medical history can help when they are easy to gather. They should never delay leaving if your pet is collapsing, breathless, bleeding heavily or unable to urinate.
Use the main emergency page for after-hours contact details and arrival information.
How to respond when breathing looks fast, effortful or different at rest.
Why open-mouth breathing in cats should be treated as urgent.
What to do after a road accident or significant impact.
Emergency pages are only a starting point. If your pet is struggling, deteriorating or showing one of the warning signs above, contact us or the after-hours service so the next step can be triaged.
When in doubt, call earlier. Early advice can prevent unsafe home treatment and helps us prepare before you arrive.
Return to the main emergency page for contact and arrival information.
Urgent guidance for possible toxin or unsafe food exposure.
How tests help guide urgent and unwell-pet care.
How calm handling and pain awareness support urgent patients too.
