Transitional cell carcinoma (TCC) is the most common bladder tumour in dogs, causing urinary obstruction and pain that significantly impairs quality of life, but responds partially to medical management that can extend comfortable life for many months.
Bladder TCC causes significant suffering through dysuria — the frequent, painful attempts to urinate that consume the affected dog's attention and disrupt normal activity and sleep. As the tumour grows, urinary obstruction becomes a welfare emergency requiring urgent intervention. Medical management with piroxicam provides dual benefit: anti-inflammatory pain relief and modest anti-tumour activity that slows progression. Quality-of-life monitoring is essential throughout: dogs that can urinate freely, maintain appetite and activity, and enjoy social interaction have acceptable welfare despite their diagnosis. When urinary obstruction becomes unmanageable or pain control insufficient, timely euthanasia prevents the severe welfare deterioration of urinary retention.