(plaintiff attempted to assist defendant in corralling defendant’s horse, but was injured in the process when horse spooked; defendant moved for summary judgment on basis that defendant had no notice of horse’s vicious propensities or history of dangerous behavior; ; motion denied; on appeal, court affirmed; conflicting testimony present about the horse’s propensities; defendant couldn’t establish absence of knowledge of vicious propensities sufficient to be awarded summary judgment motion; case proceeds, with plaintiff bearing burden to establish that defendant had notice of horse’s vicious propensities).