- Designed to bring you the latest information to help you take care of your feline friend.

Danger of Ticks and Fleas for Cats


Ticks can transmit a number of diseases, including Lyme, Ehrlichia, Babesiosis, Rocky Mountain Spotted Fever, and Anaplasmosis. Some of these are potentially lethal.

Flea infestation can lead to skin infections, tapeworms, hair loss from scratching, and anemia. This anemia can be life-threatening, especially in kittens, and geriatric animals. Flea Allergic Dermatitis (FAD) is quite common, in which even a single bite can cause a severe rash.

Signs of Infection

Ticks bury their head under the skin and stay in one spot. When they first attach they may be as small as a pinhead, but they enlarge when they become engorged with blood. They often attach in warm areas, such as the neck or head.

Flea infection usually leads to itching, although some animals are not allergic to the bites and do not develop a severe rash. While you may see actual fleas on your cat, the most common sign is flea dirt, pepper-like granules in the coat, especially on the rump and groin. These are found by either parting the coat or using a special “flea comb” with narrow-spaced teeth. To determine if what you find is flea dirt, which is actually digested blood, place the granules on a moistened white paper towel. Rub them gently; if the paper towel turns orange or red, your cat has flea dirt. It is not necessary to find actual fleas to confirm an infection.


Ticks are not affected by cold weather, and animals with exposure to woods, brush, or tall grassy areas should be treated year-round. Options for prevention include collars and spot-on treatment. All outdoor cats should be checked for ticks regularly, but because the ticks are so small before they attach they are easy to miss.


To remove a tick, grasp it tightly with tweezers at the point where the head is imbedded into the skin and pull gently. If mouthparts remain, do not dig after them! If they do not work their way out, contact your veterinarian for removal. Never use fire to remove a tick; it is dangerous and will not work.

The most common flea in the U.S. is the cat flea, which can infect any mammal (including humans). While the adult fleas live on their animal host, the eggs, pupae, and larvae do not. For this reason, once there is an infestation, it is often necessary to treat the animal and the house. Many of the newer preventatives address multiple stages of the flea life cycle; for example, even if a flea is not killed by a given preventative, the eggs it lays will have actually been affected by the preventative and will not hatch. Washing bedding, thorough vacuuming, and, if necessary, environmental sprays can all help remove non-adult stages of fleas from the indoor environment.

While flea powders and collars still exist, there are many newer, more effective, and less toxic flea control products available. Some are given by mouth, others as a monthly spot-on treatment. Shampoos and dips have a more immediate effect than some of the other treatments, but this effect does not last as long. Some treatments are waterproof or water-resistant, some safe in pregnant and nursing cats, and some are combined with other products to prevent other infections such as tick, mosquito, heartworm, roundworms, and hookworms. Resistance to flea preventative has been noted, especially in over-the-counter products, and every cat is different in their exposure level. For this reason, we suggest that you contact your local veterinarian for their recommendation on what solutions would be best for your cat. A very important consideration is that some products are safe in dogs but not in cats. It is critical to use cat-specific products in cats or death can occur.

Fleas cannot survive outside in freezing temperatures. However, they can easily be carried on clothing between houses, and hop between apartments. Year-round control may still be necessary, especially in animals with FAD. Flea eggs can also stay dormant for several years in the environment, hatching when they sense a warm body in the house.

In summary, fleas and ticks are very common parasites. They are associated with diseases and avoidance of infection is strongly recommended. Luckily, there are many safe, new products available for prevention.

Disclaimer: This website is not intended to replace professional consultation, diagnosis, or treatment by a licensed veterinarian. If you require any veterinary related advice, contact your veterinarian promptly. Information at is exclusively of a general reference nature. Do not disregard veterinary advice or delay treatment as a result of accessing information at this site.