I lost five chooks to the local fox, six months ago.
This won't bring your ewes back, but it's really interesting: All the time I'm reading (from overseas) how deadly the wildlife in Australia is - snakes, spiders, sharks etc. But we have no large carnivores!
No bears, mountain lions or any other sort of lion or tiger. It's down to an invisible boundary called the Wallace Line.
Map of Wallacea with the Wallace Line, the Lydekker Line and the Weber Line. Wallacea is the region between the Wallace Line and the Lydekker Line. As so often, at a closer look things become more complicated. The Wallace Line has two variations, including or excluding the Philippine Islands. The Philippines weren't travelled by Wallace. In the south there is another biogeographical border introduced in 1899/1900 by the scientist Max W.C. Weber as a result of the Siboga expedition. One has to consider that the borders do not only separate islands but also include maritim life.
This side of the Wallace line we have amazing lizards and spiders and NO BEARS!
Again, sorry about your animals. 
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