A normally developing 10 month old child should be able to do all of the following, EXCEPT:

A child can make a tower of 2 cubes by 12-20 months and 5 cubes by 16-24 months. He can stand alone, pick up things using thumb and index finger, and can play peek a boo. Ref: Essential Pediatrics By O P Ghai, 6th Edition, Page 46; R. A. in Pediatrics Spl. Vol. 19 Developmental and Behavioral Pediatrics by ... By Jaypee Brothers, Medical Publishers, Gupte, 2007, Page 15