Question: what the difference between human fleas and animal fleas?
Answer: Human fleas grow up to 4 millimeters in length while dog fleas average only 2.5 millimeters, according to “Dog Owner's Home Veterinary Handbook.” The eggs of the two species are the same size, around 0.5 millimeters long, but the size of larvae can vary, with the human flea growing larger than the dog flea.