Female fleas are capable of laying 30-50 eggs per day on their host! Fleas are capable of jumping with an acceleration 20 times faster than a space shuttle and up to 50 times their height. Once a flea hatches and becomes an adult, it jumps off to find a new home on a different host. Fleas were responsible for carrying the bubonic plague, which wiped out one-third of Europe in the 14th century.