Related by context. Frequent words. (Click for all words.) 61 ovulate 59 ovulation 56 mating 55 rutting 55 foaling 54 fawns 54 calving 54 colostrum 53 ovulating 53 menstrual cycle 51 molt 51 calve 51 calves 51 molting 50 lactation 50 uterine 50 insemination 49 oocytes 49 rumen 49 mares 49 Lun Lun 49 menstrual cycles 48 lameness 48 doe 48 copulation 48 lambing 47 gestational 47 Mei Xiang 47 females 47 vocalization 47 progesterone 46 heifers 46 endometrium 46 pheromones 46 lactate 46 mastitis 46 Mating 46 estradiol 46 prolactin 45 follicles 45 lactating 45 foals 45 vocalizations 45 oocyte 45 testes 45 foal 45 egg laying 45 ejaculation 45 menstruation 44 inseminated 44 meiosis 44 ejaculate 44 reperfusion 44 yearlings 44 vulva 44 uterus 44 ovaries 44 hormone 44 toms 44 hormonal 43 eggs hatch 43 breast tissue 43 ewes 43 gestation 43 teats 43 maternal instincts 43 herd 43 mating ritual 43 glucose intolerance 43 menopause 43 pups 43 germ cells 42 fruiting 42 evolutionarily 42 genistein 42 fertilization 42 menstrual periods 42 mammary 42 breeding 42 Calves 42 dormancy 42 vasopressin 42 endometrial 42 larval stage 42 ovary 42 pheromone 42 physiologically 42 mated 42 piglets 41 artificial insemination 41 puberty 41 trichomoniasis 41 rhesus monkeys 41 geldings 41 nestlings 41 cortisol 41 calved 41 menopausal 41 hormones 41 estrogen 41 HPV infections