The picture was a little dark for me - I couldn't tell what it is.
Are you planning to keep him then? If so, I would highly recommend reading the care sheets at the Deer Fern Farms website: {url=http://www.deerfernfarms.com/Uromastyx_Care.htm]link[/url]. It's a long page but the information there is extrememly important for keeping a healthy uro! There are also many photos of the common species there and you can likely identify yours.
Crickets and worms should be an occasional treat only - uros are generally herbivorous and the majority of their diet should be made up of leafy greens like dandelion, collard greens, mustard greens, turnip greens, endive, escarole, etc. Do not feed spinach, chard, cabbage, or lettuces as they are either nutritianlly empty or they bind nutrients. Many other things go into a healthy diet, but switching him over to greens is a good start.
Welcome to the forum and feel free to ask any questions you need to!
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Torey
Eugene, Oregon, USA
1.1 Uromastyx Geyri (Joe and Arthur)
2.0.1 Uromastyx Dispar Maliensis (Tank, Turtle, and new neighbor Spike)
1.2 Anolis Carolinensis (Bowser, Leeloo, and Sprocket)
1.1 African Dwarf Frogs (Bruce and Sheila)
1.0 Betta Splendens (Mr. Miagi)
1.1 Felis Domesticus (Roscolux and Jenny)
And several miscellaneous community fish
