When she's walking around I can see her belly hanging low. She has never gotten pregnant before. Does she just need to lose weight?
She is also spayed and is a one-and-a-half year old house cat, if that helps.
The loose, hanging skin on a cat's belly is simply a natural part of a cat's anatomy, sometimes called the apron, or as in the following article, the primordial pouch. This is more prominent on some cats than others, and can become more obvious in cats as they age or gain or lose weight. Getting spayed or neutered does not cause your cat to gain an apron, but it may make it more obvious due to related changes in weight.
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