in my opinion, I would say the Buckeye camera, second would be the reconyx camera's
and there NOT cheap
many of these can be had with wireless pic'video being sent AS ITS HAPPENING< so you can go there and try and stop or capture things opther ways to get evidence or??
again GOOD cam's are not cheap, many can cost several hundred dollars each,
IF cattle are possibly going to RUB against these camera's I would strongly suggest getting the metal bear proof like lock boxes to help prevent camera damage, I know a COW can rub pretty hard on things so, either place HIGH enough out of harms way ot try and case the camera in one of the metal boxes they make for that MODEL camera