Horses put off a lot of body heat, especially in the confines of an enclosed metal trailer. (Remember this when you want to stop for dinner on the way home from a trail ride during the summer and leave your horses in the trailer.) You can easily check the temperature inside your trailer with a wireless weather indicator sold at hardware and discount stores. Install batteries as indicated and put the sensor in the trailer at about the height of the horse’s back, but out of his reach. Place the main device in your tow vehicle and at a glance you can see how warm it is in the trailer. Open vents and windows (with bars and/or screens) to reduce heat and increase ventilation, which is extremely important for your horse’s respiratory health while traveling. If you have an older trailer, vents can usually be added to offer better airflow.
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