Humans, primarily. Other predators include cougars, lions, tigers, wolves, and bears.
Predators to cattle are wolves, coyotes, panthers, lions etc.
No cattle have prey. Cattle themselves are prey animals, not predators.
Highlanders are domesticated cattle, not wild cattle. However they do have their share of predators: cougars, wolves, and bears mostly. It is good to note though, that these predators only come out to kill when they have no other food source to find in their territories. The main "predator" of highland cattle are humans, since highlanders, like all beef cattle, are raised for their meat.
They are a type of cattle so they are prey animals
Rottweiler's were originally to herd cattle. They were also used to guard the cattle day and night. In the United States, they are mostly kept as house pets.
On hills, in the trees, in barns or sheds, in the grass or dirt, etc. Most cattle love to sleep on hills because they can easily see predators approaching from below.
studies have indicated that running cattle and sheep together helps keep predators at bay. Sheepherders now believe that coyotes are intimidated when cattle are present, thus drastically cutting sheep losses.
Humans can eat cougar and bear, primarily, which are predators that will eat cattle if they have a mind to.
Hermes was a cattle herder and a shepherd when he was a boy. he protected his flocks and kept them safe from predators, especially when they were scared.
Herefords have to watch out for cougars, wolves, bears and coyotes mostly that will steal their calves. Cattle that are weak or sick are targets for these predators as well. We humans are also "predators" of Herefords, but more so on purpose because Herefords are bred as a meat animal for human consumption.
It really depends on where you live and what major threats with predators and cattle theft you have in your area. If you are that concerned about your cattle getting killed or injured by predators or having them stolen, then there's nothing wrong with putting them in at night. However, if you know your animals are big enough to look after themselves, you don't have a significant threat of predator damage and/or theft, then don't bother.
They would try to mimic predators stalking cattle in such a way to make the animals move in the direction they wanted to go, especially upon studying the prey-predator interactions between buffalo and wild dogs or wolves. A lot of the herding aspect was trial-and-error, until both the herders and the cattle learned that certain methods could work without panicking the cattle and that the herders were not there to harm the cattle, respectively.