Make sure uspez doesn ' t put any pizza on it . <| sep |> Animals have a central nervous system , brain , and heart . Their bodies work very similar to humans and try to maintain homeostasis . They can feel pain and feel fear . They can develop memories based off of negative experiences that manifest itself through avoiding that negative experience again . Humans don ' t need to eat meat . The protein we need can be found from other sources soy , beans . Many products are now out that imitate the tastes and textures of real meat . There is also in progress , the growing of meat in labs , in which no animals were farmed . There are solutions to factory farming , and we should be moving towards those solutions and quit this archaic way of living . Some great options