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Urinary tract infections

Quick answer

A urinary tract infection (UTI) in dogs causes **frequent urination, straining, blood in urine, and accidents** in house-trained dogs. Bacterial infections usually need **antibiotics from your vet**. Seek urgent care if your dog cannot urinate at all, appears in severe pain, or has lethargy and vomiting — these may signal a blocked urethra or kidney infection.

Key takeaways

  • Straining to urinate, frequent small amounts, blood-tinged urine, licking the genital area, and accidents indoors are common signs. Some dogs show no obvious symptoms until infection is advanced.
  • Most bacterial UTIs require antibiotics prescribed by a vet. Untreated infections can spread to the kidneys or become recurrent and harder to treat.
  • Yes. Female dogs have a shorter urethra, making it easier for bacteria to reach the bladder. Older dogs and those with diabetes or Cushing's disease are also at higher risk.

The full guide

Causes, symptoms, treatment options and when to call your vet — in the complete plain-English guide.

Frequently Asked Questions

How can I tell if my dog has a UTI?
Straining to urinate, frequent small amounts, blood-tinged urine, licking the genital area, and accidents indoors are common signs. Some dogs show no obvious symptoms until infection is advanced.
Can a dog UTI go away on its own?
Most bacterial UTIs require antibiotics prescribed by a vet. Untreated infections can spread to the kidneys or become recurrent and harder to treat.
Are UTIs more common in female dogs?
Yes. Female dogs have a shorter urethra, making it easier for bacteria to reach the bladder. Older dogs and those with diabetes or Cushing's disease are also at higher risk.