He made his way through the crowded halls, grunting under the weight of the man.
Smaller babies may make grunting sounds as they struggle to take in air.
Frequently there is no speech at all - only grunting.
Parents should watch for cues from the child that he or she may be about to urinate or have a bowel movement, such as a concentrated look, yanking at his or her diaper, squatting, or grunting.
Grunting and pushing is one thing, but a child who cries or gets upset when trying to pass a bowel movement is obviously in need of some help.