of the Civil Rights Act of 1964 prohibits employers with at least 15 employees, as well as employment agencies and unions, from discriminating in employment based on race, color, religion, sex, and national origin.
Religious harassment in violation of Title VII occurs when employees are: (1) required or coerced to abandon, alter, or adopt a religious practice as a condition of employment (this type of quid pro quo harassment may also give rise to a disparate treatment or denial of accommodation claim in some circumstances); or (2) subjected to unwelcome statements or conduct that is based on religion and is so severe or pervasive that the individual being harassed reasonably finds the work environment to be hostile
or abusive, and there is a basis for holding the employer liable.
What you describe seems to definitely come under #2 and possibly also #1.
Scientology is a religion and your employer cannot make you listen to religious webinars masquerading as secular seminars.
You can get a free consultation from some of the employment discrimination
attorneys listed athttp://lawyers.findlaw.com/lawyer/firm/Discrimination/Irvine/California
Freedom of religion is enshrined in the US Constitution and no one can force to you go to or not go to a particular church, mosque, synagogue, meeting house or temple, or listen to a sermon, mass, homily or lecture. I assume the office took good care of the animals without any propaganda from the Church of Scientology and does not need it now. I urge you to follow up on this with a local attorney, it sounds like religious harassment as defined by the EEOC
I hope this information is helpful.