My Corso is now 10 months and his head still seems a little small right around 22 inches. His parents have larger heads and he is and was the biggest in his litter right now a little over 120lbs. My previous Corso I had almost 15 years ago had between a 28-29 inch head. I know growth can continue for up to 2 years or longer. Just wanted to see what others have noticed with their dogs if their head may go through a growth spurt. I know genetics is the biggest factor just wanted to see what anyone else has noticed with their dogs? Thanks