Wow, I'm sorry to hear that. We just went through a similar situation where one of our dogs got into the run. Thankfully my fiancée's sister was home and was able to keep the losses to just one hen (another one was injured, but is healing nicely). It is still kind of sad to find the occasional...
Are you new to chickens / when did you first get chickens? We've had chickens for the past year.
How many chickens do you have right now? 2 adult hens, and 5 chicks.
What breeds do you have? Of the adults, we have one Rhode Island Red, and one Black Sex Link. Three of the chicks (~3 weeks old)...