Karamel can open ajar doors pretty easily.
Sometimes if the door is closed, he jumps to the handle to open it

Our bedroom door is a bit dificult to close. The handle doesn't work well but when you push it closes because it's stuck in the door frame. In the morning before we wake up, Karamel opens it by persistently hitting the door, in 5-6 tries. Makes helluva noise though.