If you have any experience transporting horses, you’ve probably already noticed that they seem much more comfortable when travelling with a companion.
This is true; their heart rates and body temperatures are lower, they make less noise and less signs of discomfort.
But what if you have to transport a horse alone? Is there a way to keep them calm even without a companion?
The simple trick is: Put a mirror into the horse float.
Just being able to see another horse (even if that horse is their reflection!) makes horses more comfortable when travelling.
Solitary horses that could see themselves in a mirror made few noises and tossed their heads much less often than horses travelling alone.
So if you have an old mirror lying around, why not use it to comfort a solo-traveller?