肛门
4.The excretory opening of the digestive tract in animals such as birds, reptiles, amphibians, and
6.Any of various carnivorous catlike mammals of the family Viverridae of Africa and Asia, having anal scent glands that secrete a fluid with a musky odor.
7.Symptom: there are some small spots nearby the forehead and eyes, then turned into big hole.Fish dragged white, mucosity and long shit The fish debilitated rapidly and died.


