Astokeepingapetdog,Iamforit.Why?Becausepetdogissocuteandtheyaresopure,notjustlikesomesophisticatedadults.Whenyoucomebackhome,thedogwillrunsohappilytoyou,andsometimesevenlickyou.Sothatiswhydogcanmakepeoplehappywhentheyhavesomesadfeelings.Futhurmore,dogsarealwaysknownasfreindsofhumanbeings.Sometimes,youhaveunhappythings,whenyoutalktohim,heseemslikethathecanunderstand.So,Ithinkkeepingadogissomethinggood.