Just this year I had a male Dum attack & kill a female. Not sure of what was the cause, BUT it can happen.

I would definetly make sure you have a male & female. Male Dums can be a little territorial.
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Pat Higdon - Higdons Herps, Tuttle, Oklahoma USA
Oklahoma City Herpetological Society Member
4 dumerils boas, 1 bci boa, 3 burmese pythons, 1 albino tiger reticulated python, 2 ball pythons, 1 borneo python, 13 bearded dragons, 6 leopard geckos & 1 sulcata tortoise