Llamas have been observed to kick and paw at dogs with their front legs, stomp on it and then follow that with a kick by the rear legs. Llamas have killed coyotes which have threatened their flocks. They may also herd the sheep together into one area or herd them back up to the barn or shelter to try and keep them safe. The llama might position itself between the sheep and the predator. A few llamas have been observed to walk the other way when a predator was sighted.
Llamas seem to really enjoy and be very interested in lambs.
They will quickly bond with the lambs and may even play and sleep with them. Lowered stress in lambs results in better growth and a lower incidence of disease. Some llamas may alert sheep owners to a sick or injured sheep by remaining with that animal until the owner investigates the situation. Other behaviors of the guard llama may cause difficulty for the sheep and the rancher. Intact males or males gelded late may try to breed sheep during the breeding season.