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Most cat owners spend a lot of time with their fluffy friends, even though the latter is considered to be unsociable. Thus, they know a lot about their pet’s behavior patterns in different cases. Indeed, it is almost impossible to turn a blind eye to all these aspects when you share the apartment, play, and care for it. The most scrupulous people even devote time to studying their potential responsibilities to help their future four-legged friends stay healthy and happy. For instance, if you don’t know what to feed your pet with, read a soulistic cat food review or search for other articles on the web. And if you don’t know anything about suitable toys, pop in a pet store to examine the whole range and get a consultation.

Nonetheless, it is key to notice on time that something is wrong with your furry friend. If its behavior has changed, think about a reason for it. If its environment hasn’t undergone any changes, then your cat may have some health issues. It is better to double-check everything and visit a vet ASAP if you have noticed any sickness signs in your cat.

Loss of appetite

Usually, cats have a great appetite and consume food with great pleasure, so if your furry friend refuses to eat its usual meal, it can be a worrying sign. If you have decided to try a new diet, then, of course, it may happen that your cat doesn’t like it. However, if you offer it something different and really tasty, but it still rejects, then it is a red flag. Loss of appetite accompanies many diseases, starting with poisoning and chlamydia to feline distemper and leukemia.

Changed gait

Sometimes owners turn a blind eye to the changed gait of their four-legged friend. They believe that the cat has just bumped it on something while running and playing. However, lameness can be a symptom of trauma and a sign of such a serious illness as Feline calicivirus. This infection affects the respiratory organs and often results in animal death.


It is common for cats to regurgitate balls of hair from time to time, which they lick off of themselves when they wash. However, frequent or profuse vomiting is a symptom of the disease. Nausea and vomiting accompany many feline diseases, including feline distemper, infectious peritonitis, parasites, poisoning, the digestive system’s dysfunction, and kidney disease.


Diarrhea is often caused by poor cat nutrition. And when you change the diet, everything will get back to normal. However, do not take this symptom lightly. Diarrhea accompanies almost all parasitic diseases, and it can signal poisoning, disorders of the gastrointestinal tract, infections. Sometimes diarrhea is a side effect of certain medications. And finally, it can indicate stress and nervous tension. If the cat has diarrhea no more than two times a day, and it doesn’t contain blood and mucus, you can try to give it absorbent carbon and limit it in food, providing it with plenty of pure water. However, it is always better to contact specialists for qualified treatment.

High temperature

The normal body temperature for cats is about 37.5–39.5° C depending on the breed. However, if the temperature reaches 40⁰С, it is a sign of sickness, and you need to know what to do in this case. If your four-legged friend has a hot, dry nose, it means that it has a fever. If you cannot take the cat’s temperature, but you see that it has become weak and inert, lacks appetite, and suffers from trembling and shortness of breath, these symptoms may point to its fever. Infections, parasites, or intoxication can cause the latter.

Sneezing and coughing

Suppose your cat is coughing, and this process is accompanied by profuse drooling, conjunctivitis, and shortness of breath. In that case, the chances are high that your pet suffers from rhinotracheitis, a serious infectious disease. However, asthmatic syndrome and allergies cannot be ruled out because cats may also be allergic to dust, pollen, and some chemicals. Unfortunately, a cough can also indicate the development of heart disease, tumors, the presence of parasites, or a hernia, so it is worth visiting a vet ASAP.

Anxiety and aggressiveness

Sometimes aggressiveness is the result of a poor upbringing. However, if your cat is usually extremely sweet and doesn’t want to leave you even for a while, but then it suddenly is on a rampage or becomes excessively timid, refuses to eat and drink, it can be a reason to visit a vet. It can be a sign of rabies (especially if the pet is not vaccinated but goes outdoors), chronic stress or thyroid dysfunction, hyperthyroidism.

Bad breath

If you’ve noticed bad breath in your cat, it may mean that your cat is sick. It is often about dental problems. Caries, gingivitis, pulpitis, stomatitis, osteomyelitis, and tartar deposits are especially common. Moreover, cats with a flattened muzzle, for example, Persians, are more prone to dental diseases than others. You can avoid dental problems if you feed your cat with high-quality dry food since it removes plaque, creates an adequate load on the teeth and gums, and keeps them healthy. Bad breath can also be associated with the upper respiratory tract diseases, such as sore throat or laryngitis. A putrid smell is characteristic of the digestive tract’s infections, ammonia odor is a clear sign of malfunctions in the genitourinary system, and an odor resembling acetone indicates the development of diabetes.