Routinely calling other creatures "she", not "it" or "he".
Humans habitually make value statements in code, usually without awareness of doing so. Language plays a key role in the way humans construe reality. Insofar as conceptions of social reality are expressed in language, language is at once constitutive of social reality and reflective of it. It is not private behaviour. Because of its power to shape consciousness, language is able to create a startling perturbation in habitual concepts upon occasion. This provides an occasion for the emergence of critical awareness of habitually unquestioned assumptions.