Simple categories matching mammalian:

• trait,
• predator,
• enzyme,
• tissue,
• material,
• cell,
• tnf,
• organs,
• source,
• herbivore,
• lysozyme,
• ectoparasite,
• disorder,
• host,
• gut,
• prey,
• pancreas,
• kidney,
• organism,
• structure,
• pet,
• order,
• clone,
• process,
• carnivore,
• fauna,
• animal,
• subject,
• omnivore,
• pest,
• form,
• genome,
• taxon,
• protein,
• meat,
• behavior,
• secretion,
• species,
• female,
• muscle,
• organ,
• appendage,
• heart,
• oocyte,
• activity,
• characteristic,
• body,
• phagocyte,
• feature,
• biology,
• young,
• ungulate,
• system,
• group,
• milk,
• epithelium,
• attribute,
• insectivore,
• limb,
• fluid,
• antibody,
• creature,
• vertebrate,
• leukocyte,
• disease,
• carrier,
• eyes,
• brain,
• tract,
• reproduction,

Members with property mammalian:

• liver,
• parturition,
• stomach_cell,
• cougar,
• rat,
• skeletal_muscle,
• weight,
• wolf,
• loon,
• fox,
• human_tnf,
• rabbit,
• horsemeat,
• cat,
• bone-marrow_cell,
• gazelle,
• reptile,
• mustelid_stoat,
• land_crabs,
• aorta,
• alveolar_macrophage,
• dog,
• horse_foreleg,
• bat,
• cerebrospinal_fluid,
• mole,
• mastodon,
• chipmunk,
• primates,
• brain,
• serum,
• raccoon,
• cows,
• amygdala_flood,
• monkey_cell,
• cell,
• colon_tissue,
• horse,
• insectivora,
• howling_monkey,
• beef_liver,
• skin,
• pocket_mouse,
• behavior,
• blood,
• anopheles_mosquito,
• pork_muscle,
• newt,
• rodent_cell,
• development,
• laboratory_mouse,
• gelatin,
• milk_plasma,
• neoplastic_cell,
• brain-stem,
• carnivora,
• cow_prior,
• testicle,
• cell_growth,
• crow,
• northern_harrier,
• livestock,
• ibex,
• shrew,
• rat_brain,
• muscle,
• elk,
• morphology,
• bovine_plasma,
• soleus,
• mutton,
• yeast,
• buck,
• desert_kit,
• deer,
• green-monkey_cell,
• porcine_pancreas,
• caribou,
• rat_liver,
• swine,
• feline_cell,
• herbivorous_rodent,
• human_lysozyme,
• puppy,
• tongue_tissue,
• apoptosis,
• trematode,
• pine_marten,
• lion,
• skunk,
• giraffe,
• predator,
• hippocampus,
• flying_squirrel,
• eye_color,
• cancer,
• adrenal_cortex,
• small_opossum,
• calcium_binding,
• immunoglobulin_ig,
• cetacean,
• globin_domain,
• stomach,
• wolverine,
• mustelid_ferret,
• human_lymphocyte,
• porcine_cell,
• hamster,
• nursing,
• enzyme,
• synovial_fluid,
• tallow,
• visual_perception,
• lymph,
• mucin,
• equid,
• testis,
• murine,
• northern_goshawk,
• hair,
• bone,
• implantation,
• body,
• foraging,
• lymphocyte,
• adrenal,
• calf,
• rat_fibroblast,
• furry_body,
• amygdala,
• melanocyte,
• neuron,
• pig_heart,
• fish,
• ruminant,
• granulocyte,
• malaria-parasite_plasmodium,
• lung_cell,
• bobcat,
• eyes,
• cestode,
• heart,
• stoat,
• invertebrate_host,
• digestive_system,
• cardiovascular_activity,
• human_erythrocyte,
• drosophila,
• primate_cell,
• gene,
• colon_cell,
• erythrocyte,
• porpoise,
• human_cell,
• human_fibroblast,
• beef_heart,
• mouse,
• gut,
• breast_tissue,
• gonad,
• seal,
• hematopoietic_cell,
• canine_cell,
• gibbon,
• cornea,
• cat_gastrocnemius,
• intestinal_cell,
• sperm,
• neutrophile,
• respiratory_tract,
• racoon,
• nail,
• murine_lupus,
• pleural_fluid,
• murine_fibroblast,
• cilium,
• ovary,
• marten,
• spleen_cell,
• ape_heart,
• antibody,
• otter,
• sheep_brain,
• goat,
• rattus-norvegicus_rat,
• pet,
• beef,
• myelin,
• bison,
• marsupial_order,
• albumin,
• dire_wolf,
• ovarian_tissue,
• tissue,
• seminal_plasma,
• jackrabbit,
• dolphin,
• giant_sloth,
• play,
• fat_cell,
• oocyte,
• parental_care,
• domestic_dog,
• striped_skunk,
• olfactory_bulb,
• coyote,
• anterior-pituitary_gland,
• manatee,
• nonhuman_primate,
• possum,
• mammoth,
• synovium,
• thymus,
• brain_tissue,
• arboreal_marsupial,
• colon,
• osprey,
• human_serum,
• rat_heart,
• porcupines,
• transferrin,
• marsupial,
• small_intestine,
• feral_cat,
• coati,
• ear,
• epithelial_cell,
• seminal_vesicle,
• equus,
• liver_cell,
• human_subject,
• cows_milk,
• hoof,
• rat_genome,
• eye,
• cattle,
• ape_dolphin,
• rodent,
• nervous_tissue,
• awl_hair,
• hemoglobin,
• energy,
• house_mouse,
• kidney,
• rat_thymus,
• heart_cell,
• fibroblast_cell,
• antelope,
• end_placenta,
• pork,
• cartilage,
• cos_cell,
• hybridoma,
• piglet,
• phagocyte,
• giant_ox,
• cow,
• neutrophil,
• osteoblast,
• follicle_development,
• squirrel_porcupines,
• recombinant_yeast,
• human_leg,
• sucrase,
• semen,
• panther,
• amphibian,
• formosan_macaque,
• mountain_gazelle,
• macrophage,
• quill,
• placenta,
• spleen,
• elephant,
• lagomorph,
• buffalo,
• lamb,
• claw,
• blue_sheep,
• genet,
• tissue_culture,
• dog_cell,
• frog,
• embryonic_cell,
• gametogenesis,
• iberian_lynx,
• mustelid,
• vole,
• eagle,
• leukocyte,
• cerebellum,
• immune,
• lung_tissue,
• hedgehog,
• pancreas,
• endothelial_cell,
• veal,
• ferret,
• small_rodent,
• chimpanzee,
• armadillo_prey,
• murine_cell,
• immune_defence,
• inner_ear,
• tigers,
• bird,
• differentiation,
• myocardial_muscle,
• basal_ganglion,
• ungulate_cell,
• kangaroo,
• plasmodium,
• cat_predator,
• carnivore,
• xenopus,
• lysozyme,
• addiction,
• porcine_liver,
• nasal_mucosa,
• beef_kidney,
• mucous_tissue,
• man,
• reproduction,
• dendritic_cell,
• domestic_cat,
• flea,
• cow_milk,
• sabertoothed_cat,
• gut_tissue,
• lactalbumin,
• retina,
• embryo,
• horn,
• peptide_binding,
• monocyte,
• cos,
• wild_pig,
• monkey,
• ungulate,
• placentation,
• mucosa,
• cervid,
• vibrissa,
• bones,
• peccary,
• human_eyes,
• primates_human,
• plasma,
• uterus,
• sheep,
• developing_brain,
• mare,
• fisher,
• virginia_opossum,
• mature_erythrocyte,
• horse_perissodactyl,
• tears,
• ldl,
• water-vole_arvicola,
• lactase,
• feeding,
• cat_soleus,
• groundhog,
• koala,
• vision,
• intestine,
• gastric_mucosa,
• rabbit_erythrocyte,
• ferritin,
• binary_mouse,
• touch,
• anxiety,
• immunity,
• hawk,
• cardiovascular_tissue,
• chiroptera,
• calf_chymosin,
• movement,
• moose,
• fibroblast,
• adipose_tissue,
• cow_heart,
• tooth_dentin,
• swamp_wallaby,
• wild_rodent,
• particular_organs,
• saliva,
• kestrel,
• weasel,
• guinea-pig_kidney,
• glial_tissue,
• several_primates,
• numerous_species,
• social_organization,
• stomach_tissue,
• primate,
• sheep_fig,
• cultured_cell,
• camel,
• orangutan,
• macaque,
• lagomorpha,
• intestinal_tract,
• lynx,
• kidney_cell,
• agouti,
• polynesian_rat,
• insect,
• prefrontal_cortex,
• hare,
• proboscidea,
• bovine_protein,
• sheep_kidney,
• sheep_scrapie,
• mouse_cell,
• ape,
• mononuclear_phagocyte,
• chinese_hamster,
• mammary_gland,
• alertness,
• bovid,
• pig,
• human_oocyte,
• neural_tissue,
• leopard,
• domestic_animal,
• superoxide-dismutase_sod,
• herbivore,
• tracheal_epithelium,
• mink,
• spider_vein,
• mongoose,
• neocortex,
• nonhuman_primates,
• bovine_pa,
• equatorial,
• genitourinary_system,
• terrapin,
• paca,
• rhinoceros,
• hela_cell,
• lung,
• land_crocodile,
• mouse_antibody,
• canid,
• human_placenta,
• basal_body,
• compound,
• deer_mouse,
• gerbil,
• aggression,
• kidney_tubule,
• hair_color,
• free-living_amoeba,
• venison,
• human_milk,
• whale,
• thalamus,
• urine,
• pancreatic_cell,
• human,
• large_cat,
• squirrel,
• chinese,
• human_kidney,
• lectin,
• tick,
• mucous_membrane,
• human_genome,
• blood-vessel_disorder,
• owl,
• circadian_rhythm,
• sabertoothed_tiger,
• wild_goat,
• nematode,
• digestive_tract,
• oesophagus,
• opossum,
• pig_liver,
• collagen,
• teeth,
• milk,
• tongue,
• human_clone,
• guinea-pig_liver,
• mite,
• organs,
• mouse_liver,
• interleukin,
• seedless_watermelon,