 In Morocco in early 2002 and Colorado in 2007, mare mules produced colts.Blood and hair samples from the Colorado birth verified that the mother was indeed a mule and the foal was indeed her offspring.A 1939 article in the "Journal of Heredity" describes two offspring of a fertile mare mule named "Old Bec", which was owned at the time by the A&M College of Texas (now Texas A&M University) in the late 1920s.