Urolithiasis is one of the most common urinary tract disorders in guinea pigs. It is seen most often in animals older than 2.5 years. Stones may form in the kidneys, ureters, bladder, or urethra; they are usually calcium phosphate, calcium oxalate, or calcium carbonate.
Typical signs include painful urination (arched back, vocalising), haematuria, acute urinary obstruction, inappetence, and lethargy.
Diagnosis is multimodal; radiography and ultrasound are among the most reliable methods.
Treatment involves surgical removal, endoscopic retrieval, or instrumental extraction (from the distal urethra in females).
A guinea pig named Sonya, aged 3 years, presented with signs consistent with this condition. On examination she arched her back and passed urine with blood.
Radiographs revealed a 4 mm stone in the distal urethra. The stone was removed instrumentally, and Sonya went home the same evening.
The next day she felt much better, was active, and urination was normal.
If you are unsure about your pet’s diagnosis and want a second opinion, you can request a veterinary consultation via messengers, phone, or the form on this page.