Fleas are parasites that feed on humans and other warm blooded animals. When you have a flea problem you and your pets, become the food source. A flea can jump 7 to 8 inches vertically with their long and powerful legs.
There are several types of fleas, but the most common is the cat flea, which also feeds on dogs and humans. Fleas are attracted to body heat, movement, and exhaled carbon dioxide.