prepare to be slammed about using sand. Most people here don't like it period including my self, but I would VERY strongly recommend not using it espescially since she is so young. She is more likely to eat it wether it's on purpose or buy mistake and babies are at greatest risk of impaction.
She's a little cutie though. It's kinda hard to tell her age, but since she has her spots and looks at least 3 1/2 to 4 inches, I'd say about two months, but don't quote me on that. The store you got her from might know her approximate age.
Her tail looks good and fat, but you can give her a waxie a couple times a week. You don't have to worry about her getting "addicted" as long as you think of them like twinkies.
I hope some of this helps!
Emily
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2.4.11 leopard geckos (Nelson, Zander, Zoe, Baby, Houdini, Munch, & lots of babies)
1.1 ferrets (Oliver and Delilah)
1. budgie (Max)
0.0.1 Ring neck Parakeet (Kiwi)
1.1 German Shepards (Jake and Abigail)
www.freewebs.com/thespottedgecko
*updated*