Toy, Child, Baby, Playing, Toddler, 15-18 Months, Offspring, Little Boys, Indoors, Cheerful, Laughing, Learning, Baby Girls, Little Girls, Small, Smiling, Cute, Human Mouth, Human Face, Tasting, Happiness, Playful, Childhood, Discovery, Healthy Lifestyle, Touching, Sitting, Growth, Human Eye, Gripping, Vitality, Leisure Activity, Facial Expression, Innocence