my horse bites his side frequently, is this a sign of a problem?

Have owned Horse 10 yrs, he is a TWH, 18 yrs old, ridden ~ 5 day/week, w/ westen saddle ~c 1 - 2 hrs / day on trail, at a walk; some gating at end of walk.

sort by best latest

Actioncameron profile image60

Actioncameron says

6 years ago
 |  Comment
renee21 profile image82

renee21 says

4 years ago
 |  Comment
kcnck profile image61

kcnck says

6 years ago
 |  Comment