The cat kept waking its owner every night and driving her from the bedroom—until a visit to the veterinarian revealed a chilling reason behind its behavior.

illustration purposes only

— Anna, — I asked, — when she wakes you, how do you feel?

She thought for a moment.

— Bad. My heart starts racing. My mouth gets dry. Sometimes I feel like I can’t breathe properly. At first I think my blood pressure is rising. I take a pill and go to the couch. After a while, it gets better there.

— Has anyone ever told you continue reading …