Pets

it was because Ember hid it under the couch.

I used to use the alarm on an old push button cell phone to wake me up if I took a nap on the couch. Ember did not like the sound of the alarm. So, she attacked it until she hit the right button to make it go silent, then dragged it to the floor and pushed it under the couch with her nose.

When it was missing, I searched everywhere and finally moved the couch. There it was, lined up next to her aluminum ball collection.

I couldn't figure how how she did that, so I set the alarm again for 2 minutes, placed it on the coffee table, and waited. Sure enough. The instant that the phone made a sound, Ember was on it. Whack, slam, and pow with her paws until, by chance, she shut it off. Then, under the couch it went.

That explained to me why my radio alarm had stopped working, which is why I was using the phone alarm.

Next time, I put the phone inside Ember's carrier, with the gate closed, and put the carrier on the coffee table. It was safe from Ember's attack. But I woke up to a loud clatter. When Ember could not get to the phone, she knocked the whole carrier to the floor.

She does not like loud or unusual noises.