It can vary by breed and gender. This buckling was 2 weeks old, but his buds were only less than 1/4" high. They hadn't even really broke through the skin yet. After thinking about it last night the only thing I would have done differently is wait longer in between burns to make sure the iron was hot enough.
The little buckling was a trooper. I think the only reason he cried was because he was being pinned down and practically sat on so he didn't move. He did squirm his head a little so the right side got a little bit more of a burn, but after we were done he went right to mom, got a drink and was running around the barn with his friends. Sometimes there's nothing cuter than baby goats!
Here's two pics I took with my cell phone. They're pretty crappy but you get the idea.
http://img829.imageshack.us/img829/8094/buckling1.jpg
http://img684.imageshack.us/img684/9238/buckling2.jpg
We've agreed that if it looks like he's going to get scurs I get to come back and touch him up. Yes, I'm sick like that and don't mind going back in!
Hen - I'm sending you an email right after I'm done posting this. I'll definitely call you when Fudgie has her kids if you want & if you're able to make it that'll be awesome!