Fleas are one of the most common parasites affecting cats and can quickly become a serious problem if left untreated. Although a single flea may seem harmless, these tiny insects reproduce rapidly, meaning a small infestation can turn into thousands of fleas within a matter of weeks. Understanding how fleas live, spread and affect your cat’s health is the first step towards protecting your pet and keeping your home free from infestation.
The most common flea found on cats is the cat flea (Ctenocephalides felis), although it can also infest dogs and other animals. Adult fleas are small, wingless insects with powerful hind legs that allow them to jump remarkable distances. Once they find a host, they feed on blood several times each day. Female fleas begin laying eggs within 24 to 48 hours after their first blood meal and can lay dozens of eggs every day.
One of the biggest challenges with fleas is that only a small percentage of the infestation actually lives on your cat. Adult fleas account for roughly five percent of the flea population, while the remaining eggs, larvae and pupae are hidden throughout your home in carpets, bedding, furniture, cracks in flooring and soft furnishings. This means treating only your cat is often not enough. Without treating the home environment, newly emerging fleas can continue to reinfest your pet.
Cats react differently to flea bites. Some may only scratch occasionally, while others develop severe irritation due to an allergy to flea saliva, known as flea allergy dermatitis. Even a single flea bite can trigger intense itching in sensitive cats. Affected cats may overgroom, chew at their skin, develop bald patches or suffer from red, inflamed skin that can become infected if left untreated.
Fleas can also cause more serious health problems. Young kittens are especially vulnerable because heavy flea infestations can remove enough blood to cause anaemia, a potentially life-threatening condition. Signs of anaemia include weakness, pale gums, lethargy and poor appetite. Adult cats may also become unwell if infestations are severe or prolonged.
Another concern is that fleas can transmit parasites and diseases. Cats may swallow infected fleas while grooming, themselves.
