Catsarecreaturesofhabit.Theyliketogotosleepaboutthesame...
问题详情：Catsarecreaturesofhabit.Theyliketogotosleepaboutthesametimeeverydayandforacertainlengthoftime.Theyseemtohaveanaturalclockinsidethemthattellsthemwhentosleep.Catsincreasetheirregularsleepwithocc...