Dog Leash Hook

This is my first design. I designed this because my chihuahua used to have a leash hook at his height so he could grab it but it ended up breaking. It's been a couple years since he's done it and I thought it'd be healthy for him and his aging brain to start doing it again. I used some wood screws that were 7mm on the head and about 4mm on the shaft in my design. I didn't account for the shrinking enough and it was still too small, so if you end up using similar screws, you might want to scale u