Conner, Bill D is spot on in his assessment of cattle traffic. You might consider fencing the cattle off nearly the entire perimeter of the pond and only allow access at 1 specific spot. They don't need to be tramping around the whole pond, mucking up the shoreline, sloughing off the banks, crapping in the water.
Besides, those soon to be crocodile sized GSF just might gang up on a calf and pull it under! Sata massagana for GSF; chop chop for bovine baby!