I did talk with animal control and they were as astounded as anyone else about how this could happen. We KNOW we have bears, mountain lions, bobcat, fisher, coyotes, etc in this area as I have seen ALL of these. A bobcat (or maybe THIS bobcat) and 2 coyotes were spotted on our road the night this happened. And this is within 15 minutes of Springfield, MA. As it turned out, the OUTSIDE horses were all fine, even though the animal (bobcat?) went through at LEAST two of the three turnouts; one to get in and one to get out. The feeling seems to be that this predator was not out to get Rusty, but somehow ended up in his stall, a battle started, and Rusty almost lost the war. Realistically, I don't think we (or most people) can keep predators out of our turnouts/pastures with 100% effectiveness. Most predators can either jump over fences or squeeze through small openings. But healthy mature animals (plural) should be at low risk. This was a freak occurrence which resulted in 2 animals trapped in a stall. But that doesn't mean we aren't taking as many precautions as we can. We added more wire yesterday to the area above the stalls where we often set our foaling cams. We have no plans to breed again, so would not need to use that area again anyway.
We pride ourselves on our horse care, so for this to happen is very upsetting, to say the least. But our horse care DID save Rusty's life, because if we had not done that bed check at 9:45 PM for sure I would have found him dead in his bloody stall the next morning. And we were not the only ones upset- my vet, who has been at this for 40 years, was so upset that he got no sleep that night. I left a message for him that "there is blood everywhere" and he didn't believe it until he got here and said "your are right - there is blood everywhere". Took quite a while the next day to scrub down both Rusty's and Clyde's stalls to remove the blood.