Mammals 85 Mammalia (Mammals) 39 Zoology 20 Marine mammals 18 Physiology 11 Anatomy and Histology 9 mammals 9 Animals 7 Genetics 6 Pharmacology and Toxicology 6 Animal husbandry 5 Biochemistry 5 Encyclopedias 5 Reproduction 5 Reproductive physiology 5 Birds 4 India 4 Methodology 4 Paleontology 4 Parasitology 4 Behavior 3 Bioinformatics 3 Cetacean and Sirenia-- Marine mammals-- Whales-- Odontology 3 Embryology 3 Evolution 3 Gynaecology 3 Hormones 3 Human evolution 3 Invertebrates 3 Lipids--metabolism 3