'''Fleas''' are parasitic [[insects]] which are found all over the world. They feed on the [[blood]] of [[dog]]s, [[cat]]s and other animals, including humans. They are capable of jumping tremendous distances for their size and are known to transmit a number of diseases between humans.
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'''Fleas''' are parasitic [[insects]] which are found all over the world. They feed on the [[blood]] of [[dog]]s, [[cat]]s and other animals, including humans. They are capable of jumping tremendous distances for their size and are known to transmit a number of diseases between humans. However, they do not have wings, so they are limited to a jump's distance from any surface on which they can crawl.