That's easy. One word. One name. One hate-filled pedophile came along and convinced enough people that he was Holy, and that nothing he did could ever be criticized, and thus anything he did or didn't like must be emulated. The fact that Mohammed hated dogs is just further proof of the depth of his Evil.
Those carving are from thousands of years ago. Mohammed didn't infect the planet until a few hundred years ago.
I still can’t understand how they’d choose HIM over a brown-eyed pooch that trembles all over with its love for a person.