 Sometimes, however, the word is used more broadly to refer to behavior that benefits others, regardless of its motive. Altruism in this broad sense might be attributed to certain kinds of non-human animals—mother bears, for example, who protect their cubs from attack, and in doing so put their own lives in danger. So used, there is no implication that such adult bears act “for the sake” of their young (Sober and Wilson 1998: 6). 