The body part that insects have and cat fleas do not is wings. Fleas are wingless insects that feed on the blood of animals including cats.
Bedbugs and fleas are harmful because they are insects.
Fleas and ticks
Im pretty sure fleas are only insects!!!XD
Probably they are either ticks or fleas.
A scientist who studies fleas (or insects in general) is a zoologist who is specifically an entomologist.
ticks lice fleas
flies, fleas, insects etc.
It's impossible to generalise as there are nearly a million species of insects. About half of them only eat plants. Others are parasites like fleas. Some are carnivores and I suppose they might eat dead bodies of others.
No, fleas are insects and only mammals have nipples. The correct name for breasts, which is Mammary glands, shows the derivation.
For example lice and fleas.
Fireflies Fleas Fly