Dogs are predators.
Domestic animals are prey.
Unless dogs are raised and trained to guard and herd then there is a good chance of the predator going for the prey. It's a very strong natural instinct. Don't be surprised that dogs not familiar with working livestock make errors. They can be trained but that takes time and patience. In addition to dogs there are coyotes, fisher cats, cougar, bears, lynx, ravens, crows, owls, hawks, eagles and other predators.
This is why we have a whole pack of livestock guardian herding dogs. They protect our livestock from predators. I wouldn't want to homestead or farm without their help. They eat the predators foolish enough to come too close. The smart predators learn to stay out of our fields and seek easier food elsewhere.
Form a partnership with canines - they're natural ranchers.
Cheers
-Walter
Sugar Mountain Farm
Pastured Pigs, Sheep & Kids
in the mountains of Vermont
Read about our on-farm butcher shop
project:
http://SugarMtnFarm.com/butchershop