Pet Symptoms: 8 Signs of Illness in Your Dog or Cat

Lack of Appetite or Decreased Activity

These two ambiguous symptoms in pets should be investigated by a doctor if they continue. Dogs and cats stop eating for a host of reasons, including fever, pain, or stress.

Vomiting or Diarrhea

A pet that vomits, especially several times in one day, acts lethargic and lacks appetite needs a veterinarian's attention.

Urinating More or Less Frequently

Diabetes can be indicated by excessive thirst and urine. An increase in urine could also be an indication of kidney, liver, or adrenal gland disease.

Hair Loss or Itchy Skin

Hair loss and itching on the skin or in the area around the ears are frequently caused by fleas, ticks, mange mites, and ear mites.


Coughing is one of those pet symptoms that have to be investigated, especially if it is persistent. Chronic coughing may be a sign of lung, heart, or heartworm illness.

Stiffness, Lameness, or Difficulty With Rising

Pets with stiffness, lameness, the inability to bear weight on one leg, or difficulty getting up from the ground may have disc disease, ruptured ligaments, and arthritis of the spine or the hips.

Sudden Weightloss

If your pet has lost weight while remaining in the same routine, it may be a sign that they have become ill with a dangerous condition.