更新时间：2025-08-07 14:28:37
Dogs
Nowadaysmanypeopleliketohavedogsastheirpets.Dogsarefriendsofmannotonlybecausetheyarelovelybutalsobecausetheyarefaithfultotheirmasters.
Dogscandoalotofworkforman.Theyplaywithus.Theyhuntwithus.Theykeepdoorforus.Butlongago,dogsallovertheworldwerewild.
DogscandatebacktotheStoneAge.Alldogshavethesameancestor.Itisbelievedthattheirancestorwasmuchlikeawolf.Otheranimals,suchasthefox,camefromthisancestor,too.Hundredsofthousandsofyearsago,manbegantotamewilddogs.Afterthedogsweretamed,theyweretrained.Thestrongdogsbecameworkinganimals.Theyweretrainedtopullheavyloads.Theylearnedtokeepaneyeonthesheepandotheranimals.Workingdogshadotherjobs,too.
Somedogswerenotstrong.Buttheycouldhelpmanhuntforgame.Otherdogswerebestaspets.
Today,therearemorethan100kindsofdogsintheworld.
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