Wataƙila mun taɓa jin magana fiye da sau ɗaya Karnuka suna kama da masu su. Ya shahara sosai ga wannan ka'idar da ta shahara a cikin karatu daban-daban, wanda yayi nazari kan yadda alakar dabbobi da masu ita zata iya kusantowa ta yadda har suka kawo karshen kamarsu ta zahiri da kuma ta hankali. Akwai shubuhohi da yawa da suke tasowa yayin neman bayani.
Masana suna mamaki idan mu ne waɗanda suka muna kama da karnukanmu, ko kuma sune suke kwaikwayon halayenmu. Ana iya cewa duka shari'un suna nan. Da farko dai, galibi muna zaɓar dabbar dabbar da ta fi dacewa da dandanonmu kuma wanda muke jin an gano shi. Marubucin Ba'amurke kuma mai bincike Gini graham Scott, a cikin littafinsa Kuna kama da kare?, yayi bayani da wadannan kalmomin:
«A matsayinmu na mutane mun zaɓi mutane saboda muna da alaƙa, saboda haka muke zaɓar dabbobinmu saboda muna ji wani nau'in haɗi. Wani lokacin zaɓin yana da hankali kuma da gangan, wani lokacin ba a sani ba, amma sau da yawa mutane suna neman dabbobin gida waɗanda ke da kamanceceniya da su, saboda yana haifar da yanayin sanin saba.
Akwai wani maɓallin mahimmanci don bayyana wannan kamanceceniya mai ban sha'awa, kuma wannan shine karnukan dace da muhallinmu da kuma hanyar rayuwa. Misali, idan muna motsa jiki, abu mafi aminci shi ne cewa mu ilmantar da kare ta hanya guda, yin doguwar tafiya har ma da yin gudu tare da shi. Hakan zai sa dabba mai kuzari da kuzari. A gefe guda, karnuka suna da lamuran kuzarin da ke kewaye da su, don haka yana da sauƙi a gare su su kama kuma suyi kwaikwayon motsin zuciyarmu.
"Wannan kwaikwayon da ke faruwa tsakanin karnuka da mutane wadanda suke zaune tare ana iya kamanta shi da wanda ke faruwa tare da ma'aurata, wadanda a karshe suke kama da juna ta hanyar halaye da kuma yadda ake gudanar da ayyukansu," in ji shi. Miguel Ibanez, Masanin halayyar dabbobi a Kwalejin Behavioral na Veterinary Faculty of Complutense University of Madrid.
A kowane hali, a bayyane yake yadda ƙarfin haɗinmu da waɗannan dabbobi zai iya zama, godiya ga su babban hankali da jin kai.