We are asked to catch insects like houseflies, cockroach and grasshoppers for our biology practical. Unfortunately, all of the houseflies I caught are dead on the next day. I'm unsuccessfully catch any grasshoppers. While, the cockroach I caught are incomplete. I dissected a cockroach today during the biology period just for an exercise. But, I have to do it again because of the incomplete cockroach. Before dissect the cockroach, we need to dip a cotton wool in chloroform to anesthesia that cockroach. One of the cockroach fly out of the container when I open the cover of the container. Thanks for my classmate who helped me to catch back that cockroach. After anesthesia the cockroach, dissection is carried out. After that, we have to clean the viscus of the cockroach.