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1、DOANIMALSFALLINLOVE?JefferyMoussaieffMassonandSusanMcCarthy Humansbelievetheyknowwhatloveis,andvalueithighly.Yetmanywhostudyanimalbehaviorarecautiousaboutsayinganimalsexperiencelove,preferringtosaytheyarenotdisplaying"truelove",butsimplyfollowingthedictatesoftheirgenes. Isitreallyassi
2、mpleasallthat?Whatabouttheanimalswhostaytogetheruntilonedies?Evolutionarybiologistsoftensaythatpairingisawaytoensureadequateparentalcare,butit'snotalwaysclearthisisthecase.Someanimalscontinuetoaccompanyeachotherwhennotraisingyoung.Andtheyappeartoexhibitsorroworshowasenseoflosswhenoneofthepairdies
3、. KonradLorenz,studyingthebehaviorofgeese,describesatypicalexample.Ado'smate,Susanne-Elisabeth,waskilledbyafox.Hestoodsilentlybyherpartlyeatenbody,whichlayacrosstheirnest.Inthefollowingdays,hehunghisheadandhiseyesbecamevacant.Becausehedidnothavethehearttodefendhimselffromtheattacksoftheothe
4、rgeese,hisstatusintheflockfellsharply.Ayearwentby.FinallyAdopulledhimselftogetherandfoundanothermate. Animalsmayfallinlovedramatically.AccordingtoLorenztwogeesearemostlikelyto"fallinlove"whentheyhaveknowneachotherasyoungsters,beenseparatedandthenmeetagain.Hecomparedthistoamanwhomeetsawomana
5、nd—astonishedthatsheisthesamegirlheusedtoseerunningaroundinaschooluniform—fallsinloveandmarriesher.AccordingtoparrotspecialistSueAthan,itiscommonforsomeparrotstofallinloveatfirstsight. Instinctmayurgeanimalstolove,butitdoesnotsaywhomtheywilllove.Seekingamateforamaleparrot,Athanpurchasedafin
6、e-featheredyoungfemaleandintroducedthetwobirds.ToAthan'sdisappointment,“themaleneverthelessactedlikethefemalewasn'tevenintheroom.” AfewmonthslaterAthanwasgivenanolderfemaleinextremelypoorcondition.“Shedidn'thaveafeatherfromtheneckdown,”shesays.“Herfeetwerealltwisted.Shehadlinesaroundhereyes
7、.Andyetthemalethoughtshewastheloveofhislife.”Thetwobirdsimmediatelypairedoffandeventuallyproducedyoung. Zookeepersknow,totheirdespair,thatmanyspeciesofanimalswillnotbreedwithjustanyotheranimaloftheirspecies.Timmy
