With a mass of just over 5 kg (11 lb), an elephant's brain has more mass than that of any other land animal, and although the largest whales have body masses twenty times those of a typical elephant, a whale's brain is barely twice the mass of an elephant's brain.
In addition, elephants have a total of 300 billion neurons.
If your baby strains, grunts, or cries when trying to have a bowel movement, it may look like constipation, but it could be something altogether different.
When babies are first born they sometimes do not quite know how their bodies work, and they may have difficulty coordinating the muscles needed to have a bowel movement.
Grunting Baby Syndrome does not need to be treated. In time, they will figure out how to coordinate their muscles and have a bowel movement without crying, straining and grunting.