Even though I've never seen it happen that's hard to believe....not saying your a liar, cause I certainly don't wanna start a fight. Cause normally I agree with Dun, but it must of been a really huge male llama against a mini cow that was very sick. Llamas normally are very easy to take care of & aren't very aggressive, unless they were abused maybe that was the case?? I wish more animals would act like llamas, ours all you have to do is tell them where to go normally no hassles they go where their suppose to. They normally stay away from the large animals except when eating.
Ellie May