You probably all heard about Richard Turere's lion lights project. A Australian sheep herder created a similar device called Foxlights. It has some advantages in that it is a single unit with 360ª visibility, and relatively inexpensive (especially compared to even a single loss of an animal).
Snow Leopard Conservancy has deployed these in Nepal with great initial success. I know Project Coyote here in the USA are using them as well.
There is some concern that these intelligent predators will grow habituated to the lights. But there are multiple colors and constantly changing patterns to help with that. And as long as they used in conjunction with other techniques (such as moving the light location, adding sound via a radio...) and smart livestock management (including corraling and aligning births to the same season as the prey animals), they should prove to be an effective weapon in the arsenal.
There is now a solar version too, which is smaller, lighter, and doesn't require a lantern battery (which can be difficult to get in many parts of the world).
Let me know what you think, or your experience with this or similar devices. Thanks!