People can be strange sometimes. If they know that someone is ill, even their relatives are afraid to use his used plates and chopsticks, or even eat his leftovers and a drop of saliva. Moreover, when dining with "human beings", we often emphasize "public chopsticks and spoons", which is considered as "paying attention to hygiene". If pustules grow on the flesh of relatives, most people will never dare to suck his flesh and pus. However, people often put many sick animals and large bodies (including saliva and body fluids, of course) into their mouths to kiss and chew, and also put their gravy and blood (much more serious than saliva) into their mouths to suck, saying that they are delicious, without any consideration-is this in line with their own "hygiene concept" when dealing with "people"? Perhaps animals are cleaner and healthier than people!