Kodayake akwai karin bincike kan halaye da dabi'un halayyar kare, gaskiyar ita ce akwai 'yan karatun da aka gudanar a kansu hanyar da suke amfani da ita don sha. Kwanan nan, binciken da Jami'ar Jihar Virginia (wanda aka fi sani da Virginia Tech) ya gudanar a cikin wannan batun, yana samun sakamako mafi ban sha'awa.
Don wannan aikin, masana kimiyya sunyi nazarin hanyar sha 19 karnuka masu girma dabam da kiwo. XNUMX daga cikinsu an yi fim din a gidajensu da ke yankin Blacksburg (Virginia), yayin da sauran shidan suka yi fim a harabar jami’ar. Ta hanyar hotunan da aka samo, masanan sun yi karatun ta nutsu a kan motsin da karnukan suka yi lokacin da suka kawo ruwan bakinsu.
Sun ga yadda, bayan tsoma harshensu a cikin ruwa, da sauri suka janye shi zuwa sama, suka samar da karamar ambaliyar ruwa zuwa bakinsu. Wasu ruwan sun kasance a kasan harshen, wanda suke samarda karamin "cokali" dashi. Amma don kama ruwan malalo, karnukan yi motsi "ciji" ƙasa, sannan sake buɗe bakin kuma maimaita aikin.
«Da farko dai, karnukan suna aiwatar da wani saurin saurin motsa harshe don ƙirƙirar ruwan sama; to, tana lankwasawa a ciki don kara shigar da ruwa mai fadi; a ƙarshe, karnuka suna cizon kawai a daidai lokacin da wannan yanayin ya faru ”. Wannan shine yadda Sungwan Jung, babban farfesa a fannin kimiyyar kere-kere da kere-kere a Virgina Tech kuma mai tsara aikin ya bayyana shi.
Kuma ita ce ta rashin samun damar tsotsa ta cikin kunci kamar mutane, karnuka dole ne amfani da harshe don sha ruwan. Hakanan yana faruwa tare da kuliyoyi, kodayake na biyun suna gudanar da bin ruwa zuwa harsunansu, waɗanda ba su nutsar da su sosai. Jung ya ce: "Kafin yin wannan binciken, mun yi imanin cewa dukansu sun sha abu iri daya."