Related by context. Frequent words. (Click for all words.) 65 species 65 amphibians 65 vertebrate species 62 arthropod 62 frogs toads 61 avian species 61 toothed whales 60 amphibian species 60 salamanders 60 mammal 60 mammals 60 theropod 59 crocodilians 59 damselflies 59 vertebrate animals 59 Salamanders 59 Irrawaddy dolphins 59 baleen whale 58 marine reptiles 58 marine invertebrates 58 clouded leopards 58 Indohyus 58 frog species 58 frogs 58 lowland gorillas 58 amphibian populations 58 placental mammals 58 arthropods 57 primate species 57 Great Horned Owl 57 arachnids 57 echidnas 57 petrels 57 damselfish 57 herbivorous 57 Raptorex 57 Bornean 57 lizards 57 feathered dinosaurs 57 reptiles amphibians 56 moray eels 56 reptiles 56 crocodilian 56 platypuses 56 Critically Endangered 56 H. sapiens 56 aquatic mammals 56 amphibian 56 mammal species 56 pipefish 56 creatures 56 Ardipithecus ramidus 56 Sumatran rhinos 55 carnivorous dinosaurs 55 skink 55 tapir 55 unicellular 55 marten 55 endangered primates 55 theropod dinosaurs 55 tetrapod 55 ground sloths 55 snakes lizards 55 anglerfish 55 montane 55 gharials 55 giant tortoise 55 sauropods 55 theropods 55 morphologically 55 gharial 55 trilobites 55 phyla 55 coelacanth 55 chytrid fungus 55 chytrid 55 cassowary 55 aquatic invertebrates 55 taxa 54 taxon 54 pangolin 54 damselfly 54 functionally extinct 54 pine marten 54 Tiktaalik 54 Asiatic lion 54 bird species 54 seahorses 54 mammals reptiles 54 mammalian species 54 vertebrate 54 ant species 54 invertebrates 54 Diplodocus 54 gastropods 53 clouded leopard 53 tapirs 53 mole rats 53 timber rattlesnake 53 tyrannosaur 53 parasitic worm