I like the idea of a helmeted gecko, that was what i was going to say until someone took it
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Their amazing geckos, i dont own any myself but the place near me, reptilia, has 2 and their just great looking geckos...a 10 gal to them would be like a 50 gal to a leopard...imo a leopard isnt a great choice..10 gal is a little small..i dont think 20 is the minimum, 15 g is a perfect size..10 is ok for juvi's