First one is a photoshop. (Original is called “The wait-for-me kitten”)
The second and fourth ones are joke/parody books that are self aware of the innuendo and written for adults.
The third is the “real one” that has an unfortunate title and didn’t age well.
In case anyone is curious about the original title, I will save you my trouble: https://www.amazon.com/Wait-Me-Kitten-Patricia-Scarry/dp/B000HZ9A86