Peppermint Narwhal Creative - Happy Mule Day! The phrase "stubborn as a mule" was likely coined by someone not familiar with positive reinforcement training. Ever wonder what is a mule? A Mule
![University of Central Missouri on Twitter: "Happy National Mule Day! As we prepare for Homecoming weekend, we're proud to celebrate our strong, hard working and intelligent Mules and Jennies! #AlwaysAMule https://t.co/xMB9lGIgI7" / University of Central Missouri on Twitter: "Happy National Mule Day! As we prepare for Homecoming weekend, we're proud to celebrate our strong, hard working and intelligent Mules and Jennies! #AlwaysAMule https://t.co/xMB9lGIgI7" /](https://pbs.twimg.com/media/DqcCSRlWoAIfyXJ.jpg)
University of Central Missouri on Twitter: "Happy National Mule Day! As we prepare for Homecoming weekend, we're proud to celebrate our strong, hard working and intelligent Mules and Jennies! #AlwaysAMule https://t.co/xMB9lGIgI7" /
![Brooke Hospital For Animals (India) on Twitter: "A mule is the offspring of a male donkey (jack) and a female horse (mare). Mules are reputed to be more patient, hardy, and long-lived Brooke Hospital For Animals (India) on Twitter: "A mule is the offspring of a male donkey (jack) and a female horse (mare). Mules are reputed to be more patient, hardy, and long-lived](https://pbs.twimg.com/media/FCny8YOVQAcAHaQ.jpg)