Viruses
Rabies, Distemper, HIV, FeLV, H1N1
Can’t replicate on their own unless they invade a host cell
Best behave viruses don’t kill the host
Fungi
**MOST ARE OUR FRIENDS**
Yeast, Mushrooms
Protozoa
Single cell
Giardia, Amoeba
Non-infectious
Nutritional
Starvation
Vitamin deficiency
Mineral deficiency
Metabolic disorder
Hyperthyroid
Diabetes
Trauma
Cuts, breaks, burns, sprains
Toxic Materials
Low mortality
Poisonous plants, venomous animals, heavy metals
TRANSMISSION
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