Amazolo ezinjeni: kuyini?

Uke waqaphela ukuthi uzipho olufana nesithupha ohlangothini lwesidladla senja yakho? Kubizwa ngokuthi i-vestigial, noma i-dewclaw, umunwe, futhi kuwukubamba kusukela esikhathini esidlule sokuziphendukela kwesilwane sakho.

Kungani izinja zidinga iminwe yangasese?

Umlobi we-Psychology Today uDkt. Stanley Koren ulandelela umlando wonyawo lwenja oluyizinja kusukela eminyakeni eyizigidi ezingu-40 ukuya “esilwaneni esikhwela esihlahleni, esifana nekati esaziwa ngokuthi i-miacis, esasiwukhokho wenja yanamuhla.”

“Ngokusobala uma ungumqwali wezihlahla, ukuba nezinzwane ezinhlanu kungaba inzuzo. Noma kunjalo, ama-miaci ekugcineni aba uhlobo lwasemhlabeni, ama-cynodicts. Kusukela ngaleso sikhathi kuqhubeke, izizukulwane ezalandela zezilwane ezazizoba izinja zethu zaqala ukuzivumelanisa nendima yabazingeli bezenhlalo,” kubhala uDkt. Coren.

Lokhu kusho ukuthi uzipho olwengeziwe akuyona into enkulu emidlwaneni yesimanje. Naphezu kwalokhu, ezinhlotsheni eziningi zezinja zisekhona ezidlalweni zangaphambili. Ezinye izinhlobo, njenge-Pyrenean Mountain Dogs and Briards, zinezinzwane ezingavamile ezinyaweni zangemuva noma ziphindwe kabili-lokhu kubizwa ngokuthi i-polydactyly.

Nakuba iminwe ye-vestigial ibhekwa njengento encane, ngokuqinisekile ayinasidingo ngokuphelele. Izinja zingazisebenzisa ukubamba. Ngokuvamile, ungabona umdlwane wakho ucindezela ithambo “ngesithupha” salo. Ngokwe-American Kennel Club (AKC), uhlobo lwezinja olusebenzisa “izithupha” zayo i-Norwegian Lundehund, ezisebenzisela ukuqwala izintaba.

Inkulumompikiswano mayelana neminwe ye-vestigial

I-AKC, nokho, iphawula ukuthi lesi sithasiselo “empeleni siwunyawo olwengeziwe” futhi “cishe alunalusizo” ezinjeni eziningi.

Ngenxa yalesi sizathu, futhi ngenxa yokuthi ezinye izinja zivame ukunamathela noma ukuziklebhula—okungase kubangele inja ubuhlungu obukhulu kanye sengozini yokutheleleka—i-AKC ibiza ukususwa kwezinzwane ezingenalutho ngenye “yezindlela eziphephile nezijwayelekile zokufuya izilwane eziklanyelwe ukuvikela. ukuphepha nenhlalakahle yezinja.”

I-AKC idinga ukususwa kwalezi zihlobiso ngemva nje kokuzalwa. Eqinisweni, abafuyi bezinja abaningi benza ukuhlinzwa okunjalo ezinjeni ezinsukwini zokuqala zokuphila kwabo. Lokhu kusho ukuthi uma inja yakho ingenazo izinzwane, kungenzeka ukuthi zisusiwe ngaphambi kokuba ibe ngeyakho.

Kodwa ezinye izinhlangano zikholelwa ngokuqinile ukuthi ukususa izinzwane zangasese akwenzi lutho futhi kubangela isilwane ubuhlungu obukhulu. Ngenxa yalokhu, ezinye izinhlangano, njengeBritish Kennel Club e-UK, zibeka imingcele ekususweni kweminwe engenalutho.

“Ngaphandle kwengozi yokubamba noma yini ngomunwe, asikho isizathu sokuzisusa,” kusho u-Albuquerque Vetco. "Kungaba futhi inqubo ebuhlungu enja yakho."

Odokotela bezilwane emtholampilo waseNew Mexico batusa ukuthi abanikazi banqume uzipho lwe-appendage lube mfishane ukuze baluvimbele ukuthi lungaklibi noma ludabuke. Kungakhathaliseki ukuthi unquma ukwenzani ngozwane lwenja lwenja, kufanele unqume zonke izinzipho zayo. Ngokungafani nokhokho babo noma ozakwabo endle, izinzipho ze-canine aziyona imfuneko enkulu yokuziphendukela kwemvelo, njengoba zingabadingi ukuzingela inyamazane. Phela umdlwane wakho omuhle uncamela ukuthi uwudlise ukudla okumnandi kunokuwuzingela uwedwa.

Ingxabano ayipheli, kodwa inja yakho ayikwazi lokho. Konke akukhathalelayo (ukuthi unozipho olwengeziwe noma cha) ukuthi wena, ngokungangabazeki, uyamthanda.