Trailering can be hard on them because of the bumps and jolts forcing sudden weight shifts. With very painful horses it is recommended to bed down the trailer and give them enough room to lie down. Otherwise, use well padded boots and thick floor mats. You can get anti-fatigue mats big enough to go under the front feet relatively inexpensively at home supply stores like Lowe's.
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Eleanor in PA

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EC Owner 2001