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Updated on September 23rd, 2025
Pet's info: Cat | Mixed Breed | Female | spayed | 1 year and 5 months old | 9.5 lbs
This is my first time using pretty litter and I got some alarming results. My cat's pee turned green which according to the bag means crystal formations/urinary blockage. What can I expect when we see the vet tomorrow?
2 Answers

Answered By Laura Johnson VMD
Veterinarian
Published on July 24th, 2017
Answered By Sara Farmer, DVM
Veterinarian
Love Frida's name! When I looked at Pretty Litter's information, green is a marker of acidity in the urine. This is mainly related to diet, and many urinary diets acidify urine to prevent formation of certain crystals. Since this is your first time using the litter, it's possible that this is normal for Frida. Your veterinarian can take a urine sample tomorrow and look for crystals under the microscope. A urinary blockage would cause straining with little to no urine production and pain, and would be uncommon in a female cat so I wouldn't be too concerned about a blockage if Frida is not showing these signs.
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