3D Character Modelling

3D sculpting of a 4-legged wolf-like creature from photos of it previously designed by me as a noob. It needs to be light weight for animation in object form and exporting as a dae file for use in SecondLife. The body style needs to be from the photo, needs big paws and pawpads that peek out underneath and claws. Format requested is obj, but would be happy also with Z-brush or 3D coat native files. No texturing required, just need the base model to customize.