Does anyone else with indoor cats know this fear?

[Maya & Inka's mommy]

You are not the only one, Kirsten! Eveytime I leave the house, even for a short errand, I do a head-count!! As long as I haven't found where all 4 are, I will NEVER leave!!
It is not paranoid, it is being a responsible cat-owner

[furrykidsmother]

I am the same way. I won't leave the house until everyone is accounted for and if I get up during the night to get something to drink or use the bathroom, I won't go back to bed until I have found everyone. Sometimes by the time I accomplish that I am wide awake and can't get back to sleep, but I feel better knowing I have found everyone.