When Taz hides, he hides well. He gets inside boxes that are inside other things. I have to be very careful not to leave closet doors or the basement door open.
Just last weekend, he was hiding for 2 hours. I was calling for him. I went all over the neighborhood, knocked on doors, looked like a big dummy! (he's an inside kitty, but I couldn't find him anywhere. I thought maybe he darted out at my feet when I was going in and out??)
He was in the guest room closet inside a box that was behind some long dresses.
Probably sitting there laughing at me the whole time.

Taz also hides from Rocky. Rocky is a bit dependent on Taz and will cry and cry and cry very loudly when Taz isn't in his sight. So, Taz hides and listens to him.