Updated On September 23rd, 2025
Pet's info: Cat | American Shorthair | Female | spayed | 2 years and 5 months old
Why has my skinny 3 year old cat gained so much weight so fast and very miserable towards the other cats all of a sudden hisses and spits at our other 2 cats and never did before?
1 Answer
Published on November 4th, 2016
Gaining so much weight all of a sudden could be a sign of metabolic disease or an endocrine disease such as diabetes. She may feel ill and vulnerable and therefore tries to keep the other kitties away from her. Please take her to your vet ASAP for an exam and blood tests.
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