Health is a state of physical and psychological well-being. Health is compromised by disease. Disease is any condition which causes deviation from the normal conditions you expect to see during an animal's life. Disease is caused by micro organisms called pathogens; these include viruses, bacteria and protozoa. VIRUSES Size: between 30 and 300 nm Viruses are a protein coat around a DNA or RNA strand. They are not living cells as they have no metabolism of their …showed first 75 words of 2589 total…

…showed last 75 words of 2589 total…medicine is, what the dosage to be given is, which animal the medicine is for, the date the medicine was purchased on and how often/ on which dates it should be given etc. *The animal should be correctly restrained before medicine is administered, some medicines will need to be administered by a vet as they need to be injected. *All unused medicines should be returned to a vet for them to dispose of them safely.