are they aggressive?
Yes and No. they are pack animals and herd protectors, they can kill wolves if required. Oh yes they can spit, like camel, and its smellie
I am developing a breeding program, and will hand raise some, for handling duties, and most will be field raised, and only be handled for shearing and vet care.
They will be my boundary protectors, we are getting dogs taking our sheep at the minute.
If I see them, I will shoot to kill the feral buggers.