Dogs 104 History 78 Human-animal relationships 77 Horses 52 Behavior 51 Diseases 50 Social aspects 38 more ... Horsemanship 29 Psychology 29 Training 20 Veterinary medicine 18 Livestock 17 Dog owners 16 Bee culture 15 Animal welfare 14 Animals and civilization 12 Domestic animals 12 Horse racing 12 Moral and ethical aspects 12 Honeybee 11 Anatomy 10 Cattle 10 Pets 10 Cats 8 Environmental aspects 8 Bees 7 Breeding 7 Chickens 7 Effect of human beings on 7 Evolution 7 less ...