Anthrax is cause by a bacteria, called Bacillus anthracis. Anthrax bacteria protect themselves by forming spores. A spore is a strong, protective shell that surrounds the bacteria. This allows the bacteria to survive in harsh surroundings until they enter the body of mammal. When the spores are in surroundings that support growth, they start to grow. The bacteria are released from the spore and multiply, which causes an infection inside the animal. In nature, only hoofed mammals, such as cattle, sheep, goats, camels and antelopes, can carry anthrax.

Example:

• Anthrax under the microscope