Vertebrates and invertebratesOnline version Vertebrates and invertebrates by Luz Álvarez Herrero 1 Mammals 2 Reptiles 3 Fish 4 Birds 5 Amphibians 6 Molluscs 7 Arthropods 8 Worm They are viviparous Cow Lion Dog Dolphin Bat Lizard Snake Shark Sardines Tuna Pigeon Parrot Seagull Frog Toad Oyster Mussels Octopus Spider Ant Bee Beatles Earthworm Caterpillar Leeches