Ключевые слова: african, biology, born, brother, class, contemplation, discovery, earth, education, enjoy, enjoyment, examining, excitement, exploration, friends, friendship, gentle, growth, headshot, horizontal, infant, innocence, joy, learning, lovely, newborn, offspring, one person, outside, pet, play, playful, playing, pride, relaxation, reptile, schoolboy, science, showing, slow, smile, son, studying, toddler, vertebrate, vertical, watching, wildlife, zoo,