My dog has bladder cancer. Is her frequent urination painful? How can I tell?
Hello, sorry to hear about Tiki. It depends on why she is having these frequent small urinations. Masses in the bladder can indeed cause an increase in urgency and dogs may want to urinate more frequently without having much pee to expel.
Unfortunately, depending on where the tumor is, if it is blocking the urine outflow tract, then the frequency of her attempts may be associated with being unable to urinate completely and thus needing to go more often. This process can indeed be be painful. If painful, Tiki may vocalize (whine, cry, yelp) when urinating. If she ever is unable to urinate, then she will need to be seen on emergency basis for this.
Monitor for any vocalization while urinating, bloody urine, or straining to urinate and not producing any urine for over a 6 hour period. You may also see vomiting and a decreased appetite with complications associated with this mass. If you note any of these then have Tiki evaluated promptly.
Dogs with bladder tumors typically do show improvement of their symptoms when on the piroxicam, so if she is not getting any better, your veterinarian may need to reassess her medication protocol and options.
Hope this helps and best of luck.
Updated on September 23rd, 2025