Question

what damage or harm do to parasitic and endoparasitic animals cause

Answer 1

Physical damage may be produced in several ways. Feeding parasites may destroy tissue and cause wounds. This is accomplished in the abomasum by Haemonchus contortus and in the small intestine by immature rumen flakes (Paramphistomum cervi). As a result, bleeding occurs from small blood vessels that line the wall of the digestive tract.
Mechanical damage also occurs when parasites cause obstruction. Such obstruction may occur in the small airways of lungs infected by Dictyocaulus filaria. The function of obstructed organs is impaired; pneumonia and lung collapse may be caused by lungworm obstruction. Another example of mechanical damage is the malfunction caused by pressure on the liver or lungs from Echinococcus granulosus hydatid cysts. Tissue under excessive pressure is not well nourished with blood and may become inactive.

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Answer 2

Answer: parasites destroyes the tissue of the hosts. Lots of physical damage will occur by parasites.

Explanation: It severely attacks the host. Ectoparasites weaken the host by sucking nutrients, blood and proteins from the host. Feeding parasites destroyed the tissue of the hosts. Lots of physical damage will occur by parasites.