I don't know how to feel. I'm on the fence with this. One one hand, if dogs have sexual urges, they should be able to act them out in a safe place. On the other hand, ew, gross, no, no, no. Yucky. This is a dog sex toy. It means you look at your dog as a sexual creature. GROSS! Understand that if you own that thing you have to clean it at some point. That thing is going to have overflow if you're not careful.
If you're going to make something nice for a dog, actually make it nice. Look at that hole. That's not a hole for lovemaking. That looks like a hole you'd use the inflate a basketball. Not that I know what feels good for a dog, but I can't imagine that it's that.