Diseases in Animals

Diseases in Animals

Any condition that causes deviation from the normal state of animal. It is a condition where the system of animal is not function properly.

  • Disease may be infectious or non-infectious. 


 Are illness that are contagious , meaning they can be spread from one animal to another. infectious diseases are caused by microorganisms called pathogens. Bacterial and viral infections are common causes of infectious diseases.

  • BACTERIA – are simple , single- celled  microorganisms . live in air , soil,  food , and on the bodies of animals and plants. Some bacteria injure cells by giving of poisons called toxins. Ex. Cholera , Tuberculosis , Tetanus , Diphtheria , Typhoid fever
  • VIRUSES – are the  smallest pathogens . A virus can multiply only after entering in a living  cell . The virus then takes over the cell’s reproductive mechanisms, resulting in cell damage or death. Ex. Rabies , Foot and mouth disease, Lumpy skin disease , Hog cholera
  • FUNGI- organisms such as yeast , moulds and mushrooms are known as fungi. Fungi grow in warm , dark, and moist areas. Ex.  Cryptococcosis , aspergillosis
  • PROTOZOANS  –    have the ability to move through fluids in search of food. Ex. Trichomoniasis , coccidiosis


Pathogens can spread through  contact with –

  • An infected animal
  • An infected person
  • Contaminated food and water
  • Contaminated soil 

Pathogens can enter into the body through breaks in skin or through the moist lining of the eyes , ear, nose , mouth, and other openings.


  It is not spread by contagious. It is because of –

  • Injuries
  • Poisons
  • Poor nutrition
  • Birth defects  

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