I knew it...
It was reported by a few news agency yesterday about this research by a university's professor. They discovered cats use their purrs to manipulate humans to give them food. I believe my cats do more than ask for food. That is why I have been willing to wake up at 4 in the morning to let that little manipulator in.
She will be scratching the door at 11pm, just before I go to sleep, more often than not. Miaowing like there is some urgent matter that she needs to do (she has her kitty litter inside and that is not an issue) and then she will be back by 4am or 5am like the little party girl that she is.
But, who can resist her look or hurt animals like her is beyond me :
or her :
Him, I don't worry so much. Only that he loves to headbutt us if he feels the need to show some love (which I still need to capture on camera)