Signs of a dying, elderly cat include a decrease in appetite, more frequent naps, collapsing, weight loss and a loss of interest in everyday things the cat previously enjoyed, notes Cat World. Shortness of breath or rapi... More »

A cat's age can be determined by examining it for signs of sexual maturity and by looking at its teeth, coat and eyes. The presence of baby teeth and the amount of staining on the teeth are clues to age. Several behavior... More »

Domestic and feral cats that are not spayed or neutered can start mating and reproducing when they are between four and five months old. A female house cat can go into heat at four months. More »

Signs of a dying cat include if it collapses while walking, lack of sleep, loss of appetite, weight loss, hiding, breathing difficulties, urinary incontinence, loss of interest in everything and discomfort. A cat can liv... More »

Symptoms of liver disease in dogs vary but include loss of appetite, weight loss, vomiting, diarrhea and stomach ulceration, states Merck Manuals. Fluid build-up in the abdomen, excessive urination and thirst, weakness, ... More » Pets & Animals Pets Veterinary Health

Some signs that a pet, such as a dog or cat, is sick are lethargy, loss of appetite, changes in mood, vomiting, diarrhea, increased thirst, coughing and urination problems, notes WebMD. Some other symptoms to look out fo... More »

Symptoms of heartworms in dogs include a decrease in appetite, weight loss, fatigue after moderate activity, a reluctance to exercise and a mild, persistent cough, according to the American Heartworm Society. As heartwor... More »