Nah, just enforce the Handle Animal rules as they're written - unless you have an exception that says otherwise (animal companion) telling an animal to do a trick is a move action. You can sic, at most, two of your dogs on opponents each round. If you have a familiar (which has your ranks in skills, or it's own, whichever's better), you can get up to four.
Leadership does some interesting things... but the build for chorts and followers is up to the DM, as they are NPC's (although some DM's will let you make the build).