The cat woke her owner every night and drove her out of the bedroom: the woman thought the cat had mental problems until she took it to the veterinarian 

I’m a veterinarian, and people often call me at night. They’re convinced that if you have a diploma, you’re supposed to solve everything — from a dog’s sneeze to saving their lives. But Anna called during the day. And there was such exhaustion in her voice, as if she hadn’t slept for several months.

— Hello, is this the clinic? My name is Anna. I have an appointment with you. I have a problem with my cat… She won’t let me sleep.

The phrase “my cat won’t let me sleep” can mean anything. But there was no irritation in her tone, only concern.

Anna arrived neatly dressed, a little tense. About fifty-five years old, a strict haircut, a coat the same color as her boots. She held the carrier carefully, as if there was porcelain inside.

— This is Luna, — she said. — It’s a beautiful name, my husband chose it. But at night she’s not Luna — she’s an alarm clock with claws.

Two big eyes looked at me from inside the carrier. A large gray cat with thick fur and a calm gaze. No aggression at all.

— What’s happening? — I asked.

Anna took a deep breath.

— She wakes me up every night. Always around three or four in the morning. First she gently taps my cheek with her paw. If I don’t react, she starts hitting harder. She may even bite my hand. She pulls the blanket off me. Until I get up and go sleep on the couch in the living room, she won’t calm down. And as soon as I leave — she lies down on my pillow and sleeps until morning.

— How long has this been going on?

— About three months. At first I thought her character had changed. Then I decided it was my nerves. The therapist said it was insomnia caused by stress. He gave me a sedative. But it didn’t get any better.

Luna sat calmly beside her owner and kept her eyes on her. I examined the cat. The heart was steady, breathing clear, weight normal. An absolutely healthy animal.

And at that moment I suddenly realized with horror that the cat had no mental problems at all, and that something far more terrifying was happening  I told the continuation of the story in the first comment 

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

She thought for a moment.

— Bad. My heart starts pounding. My mouth gets dry. Sometimes it feels like I can’t get enough air. At first I think my blood pressure is rising. I put a pill under my tongue and go to the couch. After a while it gets better there.

— Has anyone ever told you that you snore?

She looked embarrassed.

— A neighbor once said that at night it sounds like I stop breathing and then suddenly gasp for air.

I looked at the cat. She didn’t take her eyes off Anna.

— It seems Luna wakes you not because she’s mean, — I said. — She might be reacting to what’s happening to you while you sleep. Animals can sense when breathing changes or when the heartbeat becomes strange. For her, it’s a warning signal.

Anna looked at me as if I had said something strange.

— Are you saying she’s saving me?

— I can’t prove it, — I replied. — But I’m sure the problem isn’t the cat. You need to get tested. Blood work, sugar levels, check your heart, maybe even your breathing during sleep. Start with that.

She stayed silent for a long time and then nodded.

A week later Anna called again. That heavy exhaustion was no longer in her voice.

— I did the tests, — she said. — My blood sugar is high. And the doctor sent me to a cardiologist. They found problems with my heart. They said that sometimes my breathing stops at night. I was sent for further examinations. The doctor said it’s serious.

She paused and then quietly added:

— If Luna hadn’t woken me up… I would have kept blaming everything on my nerves.

Now Anna is undergoing treatment. She was prescribed medication and sleep therapy. She already sleeps better. Luna still comes at night, but now she simply lies down beside her and purrs softly.