Tare da ingantuwar yanayin rayuwar mutane, kiyaye karnuka ya zama salo da mafaka na ruhaniya, kuma a hankali karnuka sun zama abokai da abokan hulɗa na mutane.Duk da haka, wasu cututtukan ƙwayoyin cuta suna da mummunar cutarwa ga karnuka, suna cutar da girma, ci gaba, da kuma haifuwa ...
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