(eighty-one year old landowner previously had more than forty horses which were deemed to be in poor condition by humane officer; agreement reached whereby landowner would reduce his herd to no more than ten horses and a mule within a specified period of time; humane officer notified that landowner not abiding by agreement and had begun increasing herd again; additionally horses were improperly fenced and were trespassing on neighboring property and in road; humane officer brought action to seize horses; substantial evidence presented of imminent danger to horses due to conditions; landowner appealed, but court upheld seizure and jurisdiction of court in ordering seizure).