Insects
The fluke is a term for a fledgling animal belonging to the fluke. The body is flat and vertebrates and external parasitic or internal parasitic. There is a sucker for attachment to the host, and sometimes there is a small hook on the sucker. The mouth is at the front of the body, mostly surrounded by a suction cup. The surface of the body is covered with cuticle, and some species grow tightly with small thorns. The digestive system is a simple structure that divides the intestines from the esophagus into two branches and is attached to both sides of the body. However, depending on the type, the intestines divided into two strands are reunited and become anal. In addition, some species are considered to be primitive circulatory systems because the lymphatic system is distributed in the intestines, genitals, and suckers and liquids similar to the blood of other vertebrate animals flow. Mostly male and female, the male and female reproductive organs of complex structure occupy most of the body. Self-correction rarely occurs and two dogs are in contact and corrected.