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Calculating Zenyatta's foaling date
I was curious about equine gestation length (horse pregnancy). And I found this nifty little calculator (http://duncity.net/horses/foalingcalc.htm) doing some research I discovered Zenny was confirmed to be 37 days in foal on June 14 2013 (source:http://www.bloodhorse.com/horse-racing/articles/78892/zenyatta-confirmed-in-foal-to-war-front) there is 37 days between May 8, 2013 and June 14, 2013. Therefore Zenny was last bred May 8, 2013. (However mares are usually bred more than once for better chances of the mare catching. So she may have been bred prior to this date.) Now back to research; because on the calculator it asks, "how many days was the mare in foal before giving birth?" We have to know that information. So, she was confirmed to be 60 days in foal to Tapit on June 21, 2012 and 60 days from June 21st is April 22. So for her Tapit baby Zenny was probably bred April 22, 2012. So now we know she was bred April 22, 2012 and she delivered April 1, 2013. Therefore she delivered at 344 days. Which means that Zennys most likely foaling date this year is April 17, 2014. Using the foaling calculator I was also able to figure out that she is 260 days in foal (technically horses can deliver anywhere from 320 days to 362 days, and if you watch mare stare you know can occasionally go over a year in foal.) However, it is also possible for mares to foal at 300 days so I would say the countdown to Z14 should begin March 4, 2014.