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For example, almost every dog I've met in my life (more than 20 subjects) uses their right paw touching one while asking for attention. Can it be used as a criterion for calling them dextral? If not, what?
However, I realize that even those dogs who live in the street might get influenced by dextral people:
There is no domestic animal which has so radically altered its whole way of living, indeed its whole sphere of interests, that has become domestic in so true a sense as the dog (Konrad Lorenz)
Is there any research about it?