Fleas are parasitic insects, meaning they live off of other creatures. In the case of fleas, these other creatures can be anything with warm blood. They do not discriminate – where ever they can find a feeding source, they will stay. This can mean pets like dogs, cats, rabbits, etc., or it can even mean humans.
Fleas go through a life cycle that is similar to a lot of insects. The adults lay their eggs, and the eggs develop until the larvae are ready to come out. Once they do, the larvae evolve through various molts before they spin themselves a cocoon. The adults eventually come out of these cocoons.
Most commonly, if the stage is set correctly and conditions are ideal, this process takes about 21 days. However, it doesn’t have to. Fleas are different from other insects in that they can essentially hit the pause button on their life cycle.
If the conditions are not ideal to move to the next stage, they simply won’t; they will wait. This is one of the reasons why people have such a hard time getting rid of fleas. It’s also why it is important for you to get a long-lasting solution rather than short-term.
A female flea can lay as many as 50 eggs every day. While the average is about 20, that is still more than enough for one female to cause a major infestation in a short amount of time.
With excellent mobile skills, fleas are known to be able to jump more than 150 times their body length. This is what allows them to jump onto larger animals like dogs.
Fleas are harmful to animals because their bites are itchy and irritating. However, some pets can also develop an allergy to flea bites. Additionally, fleas can transmit diseases that are harmful to humans because they carry bacteria.