Howdy everyone. We were hoping to gain some insight as to why our small heard of 7 cross-bred cows are running like idiots around the pasture every day at about dusk. We are located in South Central Texas, and the conditions are very dry here right now. They only started this about 3 weeks ago, and our original thought was coyotes, as they were acting very scared after their evening run by hiding underneath trees. This hasn't been the case as there is nothing out there in the pasture to scare them. They start running with their tails curled up over their backs with no provocation at the same time each night. Has anyone heard of anything like this? Any insight would be much appreciated! Thanks!