Sometime after they are around 6 months old, but usually older, a Staffy puppy's head will “split”. This process is called a lot of things, from spreading to splitting to cracking.
Do dogs head split?
in short no there heads do not split or crack it is simply a line that appears in the middle of the head as the dog matures in to adult hood the line which you see is caused by muscle growth in the dogs head which leaves this indent which to some may appear as if the dogs head has split.
What does it mean when a dogs head cracks?
The head 'split' is just a myth. Like locking jaws. Heads widen with maturity regardless of breed, then a lot is simply down to genetics and muscle mass.
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