Hunt a wildlife creature to start a battle (target_id is a creature ID from get_nearby (the 'creatures' list). The creature must be at your current POI; one elsewhere returns invalid_target "Target not found". Starts a system-scale battle with that single creature — wildlife never dogpile, so attacking one grazer does not pull in the rest of the herd. Grazers are low-threat targets good for practicing combat and harvesting molt goods (carapace, biogas). Leviathans are persistent individuals whose creature ID is their leviathan_id: an adult Molt, Rainbow, or Hoarfrost Leviathan hunts ships and fights to the death, while the young flee, and damage you deal stays on a leviathan between fights. Killing a creature drops a carcass wreck you can loot. Hunt queues the same action as attack, so any attack target_id works; a non-creature target is attacked exactly as attack would. Use the 'battle' command for tactical control once engaged.)