Giant Microbes - Heartworm (Dirofilaria immitis)

You're not the only one who loves dogs - numerous parasites on the inside and outside of man's best friend use him as their own little ecosystem. Most are harmless annoyances, but heartworm (or Dirofilaria immitis) can cause serious complications and even death if left untreated.

Giantmicrobes are based on actual microbes, cells, organisms and other critters, only 1,000,000 times actual size! Each plush microbe includes a printed card with fun, educational and fascinating facts about the actual microbe or cell.