1. What, if anything, are whales?

2. Mysticeti Odontoceti others Tylopoda Ancodonta Suina Tragulidae Pecora Cetacea Suiformes Ruminantia Artiodactyla others

3. Ballen whale Toothed whale others Camel Hippopotamus Pig Mouse deer Pecorans Whales Pig-like Ruminants Even-toed ungulates others

4. George Gaylord Simpson (1902-1984) Because I said so! (1945)

5. Balaenoptera musculus Blue whale Baleen whales

6. Physeter macrocephalus Sperm whale Phocoena phocoena Harbor porpoise Orcinus orca Killer whale Toothed whales

8. Tragulus napu Larger Malay Mouse Deer Tragulus javanicus Lesser Malay Mouse Deer Chevrotains

9. Giraffa camelopardalis Giraffe Oreamnos americanus Mountain goat Antilocapra americana Pronghorn

11. Pecari tajacu Collared peccary Sus barbatus Bearded pig

12. Hippopotamus amphibius Hippopotamus

14. Camelus bactrianus Bactrian camel Lama glama Llama

16. Aishwarya Rai Bachchan

18. Graur D, Higgins DG. 1994. Molecular evidence for the inclusion of cetaceans within the order Artiodactyla. Mol. Biol. Evol. 11: 357-364.