Things we know

17mths:
Cat, dog, bird, aeroplane, helicopter, umbrella, door, doorbell, chair, table, head, hair, eyes, ears, nose, mouth, cheek, shoulder, hand, finger, legs, toes, backside, stomach, smile, rainbow, car, lorry, bicycle, rainbow, shoes
Extra things Wen knows: Flower, leaves, number, lift, window, blender
20mths:
Can count 1-10, sing Twinkle twinkle little star and Baa baa black sheep first line (Wu)