Question

Echinococcus granulosus are commonly seen in which of the given animals:

• A. Dog
• B. Cat
• C. Fox
• D. Pig

Answer 1

The Correct Option is A

The organism Echinococcus granulosus is a parasitic tapeworm that causes hydatid disease. It primarily resides in the intestines of definitive hosts, where it completes its lifecycle. The definitive host for Echinococcus granulosus is commonly the dog (Canis lupus familiaris). In the intestines of the dog, the adult tapeworm produces eggs which are then excreted in the feces, continuing the cycle by contaminating the environment and intermediate hosts like sheep, cattle, and in some cases, humans.

The presence of Echinococcus granulosus is associated with domesticated dogs because they are in close contact with livestock, which can serve as intermediate hosts. This interaction allows the worm's lifecycle to persist and results in the spread of the eggs to new hosts.

Therefore, the correct answer to the question is: Dog.