I cannot argue with people who believe it right to bully others (including non-human animals) as, even though I can illustrate how bullying does not lead to harmony, I can’t make anyone choose harmony or define it in a particular way. I cannot argue with people who think it acceptable to hurt others in order to achieve their goals because such means are inadmissible to me. I cannot argue with people who deny or affirm a particular matter of fact as a means of justifying their moral conduct, because my mind rejects invalid, unsound arguments.
With time, the rational principles that govern my mind and the ethical principles that regulate my conduct may prove to be the fittest. Meanwhile, as a result of genetic pre-programming, social conditioning and evolutionary biology, I do enjoy being kind to other animals, respecting them for what they are and interacting with them on equal terms; I don’t believe it is right to subjugate them to my will, to control them, to change them; and I don’t need a rational justification as to why that’s right for me.
Animal Training My Way—The Merging of Ethology and Behaviorism by Roger Abrantes.