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Why is my 14-year-old cat vomiting, lethargic, and over-grooming?

Updated on September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 9.03 lbs

Good Day, Our cat is around 14 years old and has been vomiting at least once a day for the last 10 days, he has also started over grooming around 4 weeks ago on paws . We started changing his diet for the past 3 weeks from j/d(Science diet) and Hairball(Royal Canine) slowly to Orijen. He is a bit lethargic and is talking less. We had the vet test his blood and abnormalities the results were: Electrolytes S-Urea 15.8 (High) Red Cells RDW 38.0 (High) White Cells Eosinophils 3.22 (High)

1 Answer

Most Helpful Answer

Lindsey Edwards MVB, BSc, IVCA

Answered By Lindsey Edwards MVB, BSc, IVCA

Veterinarian

Published on December 9th, 2016

I wold be concerned about the lethargy and the vomiting, although vomiting may be related to the change in diet it may also be related to kidney disease. More lab tests would be required in order to investigate the elevated urea and elevated red blood count which may be related to a degree of dehydration at the time of sampling also. A urine (especially specific gravity) and repeat blood panel (fasting at least 12hours) with a view to repeat assessment of urea, creatinine and electrolytes would be important to assess kidney function
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