species, frogs, salamanders, mammals, caecilians, toads, habitats, reptiles, lizards, newts, tadpole shrimp, invertebrates, otters, insects, damselflies, fauna, organisms, insectivores, tadpoles, tuataras, hellbender, ecosystems, biodiversity, vertebrates, waterbirds, critters, bumblebees, biota, vole, creatures, birds, megafauna, dormice, arthropods, petrels, songbirds, flora, honeycreepers, turtles, snails, lemurs, endangered species, pollinators, seahorses, koalas, wildlife, owls, fungi, pupfish, killifish, periodical cicada, brown creeper, birdlife, leatherback, penguins, trematodes, crocodilians, raptors, wood stork, caterpillars, echidnas, earthworms, eastern meadowlark, arachnids, woodrat, stickleback, bullfrogs, springtails, phalaropes, lichens, honeybees, platypuses, pikas, freshwater mussel, amphipods, endemism, pipit, yosemite toad, snakes, avifauna, dragonflies, loggerhead shrike, ocelots, gastropods, song thrush, shorebirds, protozoans, monotremes, possums, dinosaurs, millipedes, cetaceans, massasauga, freshwater fish, antbirds, bufo, hawksbill turtle, rusty blackbird, vesper sparrow, trilobites, molluscan, eelgrass, marsupials, amphibian, amphibia, apes, tortoises, crustacea, anthropoids, fishes, primates, mammalia, ruminants, ungulates, angiosperms, crocodiles

age of fishes, amphibian family, amphibian genus, anuran, batrachian, blindworm, branchial arch, branchial cleft, caducous, caeciliadae, caecilian, caeciliidae, caudate, craniata, crossopterygii, devonian, devonian period, external gill, family caeciliadae, family caeciliidae, frog, gill arch, gill bar, gill cleft, gill slit, gymnophiona, herpetologist, herpetology, labyrinthodonta, labyrinthodontia, larva, lateral line, lateral line organ, massasauga, massasauga rattler, order gymnophiona, order temnospondyli, salamander, salientian, sistrurus catenatus, spawn, subclass crossopterygii, subphylum craniata, subphylum vertebrata, superorder labyrinthodonta, superorder labyrinthodontia, temnospondyli, toad, toad frog, tree-frog, tree frog, tree toad, urodele, vertebrata