It looks like a montian horn dragon to me.
You can do a google seach on them or check the other forum. I know they need high humitiy, temps in the upper 70's to low 80's. Eat insects. I would say try getting some water into your guy, heat and a good herp vet.
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Anna
1.0.0 Ball Python {Shane}
1.0.0 Afican Bullfrog {Bungy}
2.2.8 Crested Geckos {Mel, Harley, Sally, Momma, unnamed}
0.0.1 Giant Black African Millipede {Milly}
2.0.0 Parakeets {Storm, Cloud}
2.0.2 Button Quails {Bob, unnamed}
1.0.0 Short Tail Possum {Eddie}
3.0.0 Pet Rats {Carlos, Ibin, Meany}
1.1.0 Dogs Lab/Pionter mix,German Shepherd {Vegas,Nevada}
2.1.0 Kitties {Kenny, Sebation, Phoebe}
1.0.0 Betta {George}
1.0.0 Boyfriend {Brian}
1 fish tanks with lots of fish
2 Crested Gecko eggs layed 5/18
And the bugs
Thats it for now.....