Pleurodema bufoninum
Its natural habitats are subantarctic forests , temperate forests , subantarctic shrubland , temperate shrubland , subtropical or tropical dry shrubland , subantarctic grassland , temperate grassland , intermittent rivers , swamps , intermittent freshwater marshes , arable land , rural gardens , ponds , and open excavations . 
<triplet> grassland <subj> habitat <obj> instance of <triplet> swamp <subj> forest <obj> subclass of