This guy may not look too tough, but don't let his cute looks fool you! Once he and his friends show up you're in for a pretty lousy time. Learn about his weaknesses so you can avoid unwanted encounters.

• Collect dozens of viruses
• Comes with an image of the real thing
• Antibiotics not required
• They make great learning tools for parents and educators, as well as amusing gifts for anyone with a sense of humor!