My dog has a UTI, is on meds, and now can't pee. What's wrong?

Question

14 yr old poodle is on Keflex 250mg Q 12 hr. for uti. 5 days later she is not peeing. Pet's info: Dog | Miniature Poodle | Female | spayed | 18 lbs

Dr. Massimo Orioles, DVM, Cert AVP, MRCVS · Accepted Answer

Anuria (not urinating) needs to be absolutely checked as soon as possible. There are different possibilities at this stage: generally speaking either the urinary bladder is blocked and there is something obstructing it (urinary stone or eventually a mass) which is responsible as well for the initial UTI or the kidneys are not producing urine appropriately. Abdominal radiographs or ultrasound may be needed to confirm these clinical suspicion and understand the underlying cause.

My dog has a UTI, is on meds, and now can't pee. What's wrong?

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