Has anyone used a doggy door for goats?

[WarrenPFjr]

Hi there,
I'm working on a temporary pen set-up in a new barn and want the goats to have indoor/outdoor access. I plan on installing a standard, 36" people door but I don't want the door left wide open 24/7. I am thinking of installing a doggy door in this door, and am curious if any of you folks have used these for goats. If so, any tips or tricks to think about?

Thanks,
Warren