Fleas are small, wingless insects that feed on the blood of animals and people.
In Texas, most flea problems are caused by the cat flea, Ctenocephalides felis. This flea feeds on cats, dogs and wildlife. Other kinds of fleas, such as the dog flea, human flea, and rat flea, are less common on pets and in homes. Fortunately, fleas need not be a serious problem because there are many effective treatments. They are brownish-black, flattened looking, and without wings.