Ключевые слова: aged, anatomy, animal, axis, biology, body, bone, bone for dogs, chewing bone, chiropractic, dead, dog bone, dogs bone, education, equipment, ergonomic, femur, for dog, hand, hip, human, joint, leg, mammal, medicine, nature, old, orthopedic, osmium, osteoporosis, pain, people, pet bone, two, wildlife,