Flat occiput

The Flat-coated Retriever is a gundog breed originating from England. It was developed as a retriever both on land and in the water. [Source: Wikipedia ]

May Be Caused by

 Common

Achondroplasia

Immobilized infant

Postural flattening

Trisomy 21

 Uncommon

Acrocephalosyndactyly Pfeiffer type

Acrocephalosyndactyly Saethre-Chotzen type

Acrodysostosis

Apert syndrome

Brachmann-de Lange syndrome

Carpenter syndrome

Crouzon syndrome

Sanfilippo syndrome

Weaver syndrome

Weill-Marchesani syndrome

XXXXY syndrome