Conversation so far:
When was retirement?
On November 17, 2010, Zenyatta was slated to be retired.
Was she injured?
CANNOTANSWER.
Did she retire at that time?
On February 23, 2011, she traveled by van to Darley Stud, where she was bred to Bernardini.
Are there any other interesting aspects about this article?
Zenyatta later give birth to a dark bay colt, eventually named Cozmic One, on March 8, 2012.
Did her colt go on to be a racing horde as well?
Cozmic One had two starts in 2015 and performed poorly at the track.
He has since been retired.
Who was her trainer?
CANNOTANSWER.

Question: What other things happened during her retirement?
Self-contained rewrite: Besides giving birth to a dark bay colt what other things happened during Zenyatta's retirement?