To begin with, I always wondered why rats were always the primary subjects to be experimented on, I am aware that the monkeys are also experimented. I always thought that it made more sense for monkeys to be experimented on because they are the closest to humans when it comes to our brain. But after doing some more research I found out that the reason why scientists use white lab rats is because they are actually highly intelligent and friendly, also due to them being relatively small they are easier to handle than a monkey. Lab rats also have a shorter life span, i actually think that it causes the experimenters to not feel as bad if something bad were to happen to the rats after an experiment. Throughout chapter 13, Marc told about his
