Well, most of the dog car seat covers fit into your car leather seat, and thus, you do not have to worry about protecting it from your dog. But you need to keep in mind that you must buy such a car seat protector for dogs that covers the entire car seat correctly and is not loose on the edges. If it does not fit in properly, then the sliding and slipping may affect the leather cover, and you can't blame your dog for the same! So, the ones with tying straps are considered suitable for the leather seat of your car.