Just some info straight from the YCH:

"Things to know;
- Any species goes, I'm just partial to canines haha
- slight modifications to the anatomy is allowed in moderation
- Autobuy permits modifications to the background
- female slot can be alter to a fem boy or herm or shemale Muscular males not allowed
- False bids will result in you getting blocked
- Payment is expected upfront and in full, however if you auto buy, you are applicable to do payments in series."

You can find it here: http://www.furaffinity.net/view/17282737/

Happy bidding!