Thats a good lookin' Dum!!! Very, very nice!!

The white throat patch is normal on Dums. It is like a finger print. No two are alike. I have pics of the white patchs of all my Dums, that way if they every get stolen and I see one in a pet store around here (which is VERY HIGHLY UNLIKELY) I can check it.
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Pat Higdon
Oklahoma City Herpetological Society Member
4 dumerils boas, 2 albino burmese pythons, 1 ij & 1 jungle carpet python, 10 bearded dragons, 15 leopard geckos, 2 tokay geckos & 2 sulcata tortoise