What causes frequent urination or a change in urine colour in pets?

Common causes of abnormal urination include infection, inflammation, bladder stones, or trauma. The specific cause needs to be confirmed by a vet through urinalysis, imaging, or culture — prompt examination is advised to rule out urgent conditions.

How should I record symptoms at home to help the vet with diagnosis?

Record the onset time, daily water intake and urination frequency, urine colour and odour, and take videos of urination or movement — this information can greatly speed up the vet's assessment.

What tests are usually performed at the clinic?

The vet will typically perform blood tests, urinalysis (including urine sediment), urine culture, and imaging (X-ray or ultrasound) to identify infection, stones, or structural abnormalities.

Is follow-up testing needed after symptoms improve?

Yes — a recheck urinalysis or blood test is usually required after completing treatment to confirm improvement. If symptoms recur, further imaging or specialist evaluation may be needed. Follow your vet's instructions for monitoring.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Pelvic Bladder in Dogs & Cats: Symptoms, Diagnosis & Care [2025]

An abnormally positioned bladder, usually without clinical signs

Take 1 minute to check the symptoms first

Last updated: 2026/01/06

Pethealthmap Editorial Team

Sources: ISFM, WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek Emergency Care Immediately

•Persistent inability to urinate with obvious abdominal distension
•Large amount of fresh blood in urine or continuous bleeding during urination
•Sudden inability to stand or severe crying out in pain

Schedule a Clinic Visit Soon (within 24–72 hours)

•Noticeably reduced urination frequency or frequent changes in urination pattern
•Persistent abnormal urine color or odor lasting more than one day
•Decreased activity and reduced appetite for more than two consecutive days

01What symptoms indicate a problem?

Pelvic or bladder problems often present as changes in behaviour and elimination habits, and may affect energy levels and alertness.

Lethargy, dullness, or less playful than usual
Reduced appetite or refusal to eat — note how many days this has lasted
Decreased activity, reluctance to jump or climb to elevated spots
Abnormal urination: reduced urine output, increased frequency, or change in urine colour

Seek emergency care immediately if you notice the following symptoms:

⚠️ Visible blood or bright-red blood in urine
⚠️ Straining repeatedly to urinate with little or no output
⚠️ Sudden severe pain or inability to walk normally

02How to assess abnormalities at home: key observations and emergency criteria

Observe and record the following at home — this information helps your vet assess the situation quickly and prioritise care.

Note when symptoms first appeared and track any worsening trends
Record short videos of urination or movement, capturing front and side views
Log daily water intake (cups or estimated frequency) and any changes
Record daily urination frequency and note urine colour and odour
Weigh your pet on consecutive days and watch for noticeable weight loss

03How will the vet make a diagnosis? Common diagnostic tests

At the clinic, the vet will combine physical examination with laboratory and imaging tests to assess the cause and severity.

Full physical examination and abdominal palpation to assess for pain or enlargement

Complete blood count and biochemistry panel to evaluate systemic metabolism and signs of infection

Urinalysis including urine sediment and specific gravity to assess urinary tract status

Urine bacterial culture to confirm or rule out bacterial infection

X-ray of the pelvis and bladder; CT or ultrasound for complex cases

04How to treat and care for your pet after diagnosis: medication, diet, and home care guide

After treatment, follow the prescribed medication, dietary recommendations, and scheduled follow-ups to reduce the risk of recurrence and complications.

Administer medication as directed and attend scheduled rechecks to report any changes
Dietary modification or prescription food may be needed to reduce stress on the bladder
Return for regular urinalysis or blood tests to confirm improvement
Home care includes keeping the litter or toilet area clean and limiting strenuous activity
If symptoms recur or improvement is insufficient, referral to a specialist hospital is recommended

05What to prepare before your vet visit: key information to help the vet identify the cause quickly

Record close-up videos of urination, noting frequency and circumstances each time

Note urine colour, presence of blood, or unusual odour

Estimate daily water intake and number of urinations

Write down the onset time, symptom progression, and any previous treatments

Bring any previous test reports or imaging results for the vet to compare

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.

Related Symptoms (You May Also Be Looking For)

Lethargy

Decreased activity

Anorexia

Loss of appetite

Scaling

Flaky skin