Scratch?

[beanersmysav]

My girlfriend just called me tonight and told me her male leopard gecko looks to have a red line on his stomache. She says it kind of looks like a scratch thats healed but isn't sure. She said there wasn't any blood of any sort.

I haven't gotten a chance to look at it yet but I will tomorrow, but does anyone have any ideas what it might be? There's nothing in his cage that could have done this, and he's been seperated from the females for awhile I thoughr it could have been a scratch from breeding. There's nothing in my Leopard Gecko manual about it so I was hoping someone here would know.