The cat suddenly smelled bad.
The main reasons why a cat's body suddenly smells bad are: blockage leading to odor emission, organ lesions causing odor, serious illness, old age and lack of energy to groom, soft stools and diarrhea causing feces to stick to the fur. All four of these situations can cause a cat's body to suddenly smell bad.
A cat's body may smell bad due to a blockage.
Felines are obligate carnivores, and their stools are normally hard and dry. Combined with the fact that domestic cats are generally quite sedentary and don't get enough exercise, they are prone to constipation, which can easily lead to gland blockage. Gland blockage causes cats to have a strong, persistent odor.
A cat's body odor may be due to organ disease.
If your cat suddenly smells bad, the odor could be coming from its mouth, skin, or ears, and you should observe carefully. Finding the source of the odor will help you determine what's wrong with your cat's health. Skin diseases, ulcers, or abscesses can cause a foul odor. If your cat has gingivitis or stomatitis, its saliva will smell very bad, and its mouth will also have an unpleasant odor. Ear mites and some external parasites can also cause unpleasant smells in cats.A cat's body may smell bad due to serious illness or old age.
Older cats have limited energy and don't have as much time and effort to groom themselves, which can lead to dirt not being cleaned in time and potentially causing an odor. Additionally, some cats that are sick or recovering from illness may also develop a foul odor.A cat's body may smell bad, or it may have loose stools, diarrhea, or fecal matter.
When a cat has diarrhea or loose stools, feces can easily get on its body. If not cleaned promptly, the cat will naturally smell bad. This is especially true for some long-haired breeds, which are prone to getting feces on their bodies even without loose stools or diarrhea.