ABSTRACT
Nor does jumping over a lunar-human line of vision fall within the bovine behavioral reper toire. A donkey can kick up its heels (and pro vide the basis for the word “recalcitrant”), while no elephant can emulate the act. Mental processes may be seriously constrained by an animal’s ancestry; overt behavior, especially lo comotion, is constrained both by ancestry and by the physical rules and characteristics of the immediate world in which an animal finds itself.
