Un cercetator britanic a inventat un dispozitiv care poate stabili starea de spirit a cainilor in functie de modul in care acestia dau din coada. Dr. Roger Mugford sustine ca poate constata daca animalul este vesel, furios sau intentioneaza sa atace pe cineva. Dispozitivul, numit „wagometer” (de la „to wag” – „a da din coada”), se aplica pe spatele cainelui si are senzori atasati la coada. Aparatul poate indica viteza, directia si arcul de rotatie al cozii si astfel se poate analiza dispozitia animalului.
„Un caine vesel da tare din coada, in timp ce unul care este pe punctul de a ataca isi misca doar varful cozii. Miscarea transmite semnale intre caini si este important ca oamenii sa nu taie coada cainilor lor”, spune dr. Mugford, care conduce Animal Behavour Centre din Chertsey, Surrey.
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