I own two llamas, Tilly and Nigel, and they both get a long well with my equines plus my dogs and pig. Tilly lives with three shires; a Thoroughbred and a Shetland Pony, she sometimes will chase one of my dogs but she is normally put in her place rather quickly by one of the Shires. Nigel, a castrated male, lives with my Shire stallion in a seperate pasture and he doesn't bother the dogs at all. It all depends on the animal if they will get along with your dogs/horses, not to mention kids or other animals. My don't really eat weeds unless it is a last resort and they are about as much to keep as one of my horses. Sure they do eat less but there is still the vet bills, farrier bills, feed bills etc that have to be taken care of. Then there is there coat which you are interested in selling once the llama has been clipped. It is a lot of worked to cut there coats, you can't just buzz it and be done. Certain areas of the llama have a better quality wool then others and the llama itself should be groomed before hand. The llama should also be desensitized to the sound of the shears, some never do like the noise. So you may want to go to classes or watch videos, maybe even visit llama farms, to see how the clipping is done. If you intend on making the wool into yarn, which is what I do, it invovles all the more work and equipment.