I HAVE A HORSFIELD TORTOISE THE SAME LENGTH AND WEIGHT MINE IS 18 MONTHS OLD AS FOR GENDER TO SOON TO TELL
Sep 01, 2009
Horsfield Tortoise Size and Gender by: Shelly
What a cutie!
A horsfield tortoise will grow to about 4 to 8 inches long. Your looks to be smaller than that, so the most I can say is that it is nearing maturity, but is not there yet.
As for the sex, I think yours may be a male, but I'm not sure. There is a good description here. I also made a page about sexing tortoises in general. It also might help you.