Tortilla sticks to a warm cat because of the love for him

I have been living a turtle for seven years and a cat for 12 years. The turtle attracts the cat only by shrill (she lives in a large cardboard box). Sometimes the cat can sit for hours and look at the attempts of the turtle to get out of the box, sometimes it will come just to check whether it has not died. A couple of times he tried to pick a turtle out of the box, but he was spotted on time - he got it in the neck. In principle, peaceful coexistence - based on cat's curiosity, we can say that the cat turtle cares just like all other objects in the apartment.