Are they in a humid environment? The mold needs that to form.
Also what is the temperature in there?
They look good, you have done well. The first batch flipping is par for the course! We all have our spills!!
But the cat made me laugh
You gotta follow the thought process of the cat: "huh, I'm locked in the closet with the cheese.... huh... mice like cheese. I like mice. There aren't any mice around.... I'll eat the cheese and skip a step!!" Brilliant really!
What recipe/process are you using?