Toystory was bred by the Wisconsin-based Cooperative Resources International, and was born on May 7, 2001, in Mystic Valley Dairy near Sauk City, Wisconsin. His full name was Jenny-Lou Marshall Toystory, his dam (mother) was Jenny-Lou Patron Toyanne and his sire (father) was Mara-Thon BW Marshall. Toystory produced his first collected dose of semen in November 2005. Inimex Genetics started bringing Toystory semen into the United Kingdom in 2006 and started selling the semen in 2007. On June 10, 2009, at just eight years of age Toystory became the youngest Holstein bull ever to produce a million units of semen. The semen was sold around the world, including in the Americas, Europe, Japan, China, Russia, and Pakistan. Toystory has sired an estimated 500,000 offspring in more than 50 countries. In May 2011 he became the most productive Holstein ever, surpassing the world record by producing his 1.7 millionth unit of semen at just 10 years of age. Just before his birthday in May 2012, Toystory became the first ever Holstein bull to surpass 2 million units of semen produced.[4] On Thanksgiving Day 2014 at 13 years of age Toystory died with a lifetime semen production of 2.4 million units of semen produced.[2]