Will Emus Make Good Livestock Guardian?

Looks like we are getting Emus. Im tired of the neighbors dogs coming onto my property and killer my lambs and fowl. Laura loves her dogs, so i just got a llama and will soon have Emus on my property with my sheep and goats. She has dogs protection on our Collins property, i will have other livestock guardians on my Stockton properties. I wanted Guinea Fowl for tick control, but the neighbors dogs keep killing them, my turkeys and my lambs. So enough is enough. They don’t want to control their dogs, so i have to.