Related by context. Frequent words. (Click for all words.) 60 ungulates 58 mammals 57 woody vegetation 56 elk bison 56 sparse vegetation 55 deciduous forests 55 crocodilians 55 echidnas 55 eiders 54 cottontail rabbits 54 mammals reptiles 54 forbs 54 insect eaters 54 Barn owls 54 Spider mites 54 Paranthropus 54 elk calves 54 pasture grasses 54 African savanna 54 elephants rhinos 54 conifer forests 53 herds 53 Greater Yellowstone Ecosystem 53 pocket gophers 53 coniferous forests 52 peccaries 52 canine teeth 52 herbivores 52 temperate forests 52 snowshoe hares 52 termite mounds 52 placental mammals 52 grassland habitat 52 insects spiders 52 aquatic invertebrates 51 bony plates 51 hibernators 51 bears mountain lions 51 hoofed animals 51 ungulate 51 peccary 51 coyotes foxes 51 refugia 51 buffalo herds 51 mammal 51 lowland forest 51 domesticated cats 51 savanna 51 bison elk 51 horned dinosaurs 51 mottled brown 51 overhunting 51 baleen whale 51 camelids 51 decaying vegetation 51 lynxes 50 arctic fox 50 animals 50 yellow legged frogs 50 caribou herds 50 cottonmouths 50 gastropods 50 marine reptiles 50 riparian vegetation 50 forest canopies 50 amphipods 50 duiker 50 skunks raccoons 50 baleen whales 50 bisons 50 aspen stands 50 goannas 50 terrestrial ecosystems 50 Mule deer 50 grassy plains 50 tiger subspecies 50 saber toothed tigers 50 redpolls 50 sage grouse populations 50 lowland forests 50 penguin colonies 50 penguin chicks 50 deer herds 50 toothed whales 49 brachiosaurus 49 constrictors 49 caimans 49 ponderosa pine trees 49 Grevy zebra 49 habitat fragmentation 49 kangaroo rats 49 tule elk 49 cassowaries 49 mole rats 49 endemics 49 cutworm 49 double crested cormorant 49 snail shells 49 Smilodon 49 species 49 Extinctions