A523+ Yes, you can deliver a touch spell through a natural attack but you resolve it as a normal attack, whether you make a single attack or full attack is irrelevant, the spell discharges upon you touching anything. A touch attack is not a natural attack though, so you can't do bite, claw, and touch, but you can do touch, then bite and claw at -5 penalty since they become secondary attacks in the presence of a "weapon" attack. The exception is a magus who can spellstrike as part of his normal attack routine. The only part where the rules are unclear is actually which natural attacks discharge your touch spell. Is it just one claw? Is it all claws? Is it all weapons including bite or gore? I think this part is best discussed with the GM.