a dolphin can balance a ball on its nose
australian_snubfin_dolphin is not mammal. spinner_dolphin is not mammal. oceanic_dolphin is mammal. atlantic_white_sided_dolphin is mammal. dolphin is not animal. oceanic_dolphin is not mammal. atlantic_white_sided_dolphin is not mammal. australian_snubfin_dolphin is mammal. dolphin is not toothed_whale.