| Flea News: A biannual newsletter devoted to mostly bibliographic information about fleas. |
| Fleas: Article by P.G. Koehler about flea biology with photographs, and tables relating to their control. |
| Fleas: Ohio State University Extension fact sheet about fleas, including a species list and information about life cycle and control. |
| Fleas (Siphonaptera): Zoological Institute of Russian Academy of Sciences (St.Petersburg, Russia) presents information on morphology, biology, distribution and importance of fleas (Class Insecta: Order Siphonaptera). |
| Fleas - Animal Health: Brief information about the cat flea (Ctenocephalides felis). |
| Insecta Inspecta World - The Common Cat Flea: Taxonomy, anatomy, jumping skills, reproduction, and control of the cat flea. |
| Integrated Flea Control: University of Nebraska Cooperative Extension in Lancaster County factsheet and audio on flea biology and control. |
| Introduction to the Siphonaptera: A brief introduction to fleas by UCMP Berkeley, with photograph. |
| The Black Death: Culprit: The Oriental Rat Flea: About the flea and the disease. |