I've goofed several times now by not double checking the sex of the pet I'm naming, in all the cases I'd like to change their names to versions that fit the true sex of the pet although in 1 case I wouldn't mind changing the sex to fit the name (Emerald Queen the male dragon), so how do I do both? Is there more than 1 way? I've run across a user who beat me in an auction & when I tried looking at the pet I couldn't find it & when I did find it it & a lot of the users other pets were Nameless.

There are two ways to rectify this- buy a Change Sex scroll (either from the Premium shop or from the Trading post) or an Amnesia Potion to make the pet forget its name. Neither is cheap, but both are great ways to patch up a slipup. :)