Superclass 	Classes
aquatic mammals 	beaver, dolphin, otter, seal, whale
fish 	aquarium fish, flatfish, ray, shark, trout
flowers 	orchids, poppies, roses, sunflowers, tulips
food containers 	bottles, bowls, cans, cups, plates
fruit and vegetables 	apples, mushrooms, oranges, pears, sweet peppers
household electrical devices 	clock, computer keyboard, lamp, telephone, television
household furniture 	bed, chair, couch, table, wardrobe
insects 	bee, beetle, butterfly, caterpillar, cockroach
large carnivores 	bear, leopard, lion, tiger, wolf
large man-made outdoor things 	bridge, castle, house, road, skyscraper
large natural outdoor scenes 	cloud, forest, mountain, plain, sea
large omnivores and herbivores 	camel, cattle, chimpanzee, elephant, kangaroo
medium-sized mammals 	fox, porcupine, possum, raccoon, skunk
non-insect invertebrates 	crab, lobster, snail, spider, worm
people 	baby, boy, girl, man, woman
reptiles 	crocodile, dinosaur, lizard, snake, turtle
small mammals 	hamster, mouse, rabbit, shrew, squirrel
trees 	maple, oak, palm, pine, willow
vehicles 1 	bicycle, bus, motorcycle, pickup truck, train
vehicles 2 	lawn-mower, rocket, streetcar, tank, tractor