Originally Posted by strange_wings
Paying attention to your cat's behavior saved the dog.
I always check outside if I notice that my cats are especially alert. It either means I'll see some animal in my yard or there's people nearby. Around this time last year I was home alone late one night (DH was working late) when Tomas started going to all the windows that faced the backyard and growling. I looked out in time to see a shadow - I think someone was cutting across the backyard or snooping about.
Just last night, Nova was staring at the door. I looked through the peep hole but didn't see anybody. Today, there was a flyer taped to the door. She knew someone was out there.
To the OP, what a smart kitty you have! And good for you for paying attention!