the horse doing the 8.5 mph walk is this a TWH? at a flat walk?
For those not familiar with the speed of a TWH here is a little bit of knowledge.
The flat foot walk is a brisk, long-reaching
walk that can cover from 4 to 8 miles an hour.
This is a four cornered gait with each of the horse's feet
hitting the ground separately at regular intervals. The horse
will glide over the track left by the front foot with his hind foot
(right rear over right front, left rear over left front).
The action of the back foot slipping over the
front track is known as overstride.
The running walk is the gait for
which the walking horse is most noted!
This extra-smooth gliding gait is basically the same
as the flat walk with a marked increase in speed.
This breed can travel 10 to 20 miles per hour at this gait.
As the speed is increased, the horse over-steps the front track
with the back foot by from 6 to 18 inches. Tennessee Walking Horse, Breed Description and Gaits - Presented by Jus' Fine
My first horse for my kids was a 15.3 TWH X Percheron and the lady running the stable said the horse was lame due to his head bobbing up and down. Then she read up on the breed and learned that they bob their heads up and down and some also will click their teeth together while keeping in time with their strides