It's the Greek symbol for "ZETA" which in itself is an acronym for "Zoophiles for the Ethical Treatment of Animals."
The ZETA principles are:
- Bestow upon animals the same kindness one would wish bestowed upon oneself.
- Consider the well being of an animal companion as important as ones own.
- Place the animal’s will and wellbeing ahead of one’s desires for sexual gratification.
- Teach those who seek knowledge about zoophilia and bestiality without promoting it.
- Discourage the practice of bestiality in the presence of fetish seekers.
- Censure sexual exploitation of animals for the purpose of financial gain.
- Censure those who practice and promote animal sexual abuse.
As defined by Zeta-Verein.
