Fighting Majungasaurs

Just finished to read the new article on Mark Witton's blog, about soft tissue traces in bones of extinct animals, such as abelisaurs. In the article it's also stated that bone traces like that on Majungasaurus skull implied very thick skin, like that of hippos and seals, and that a thick skin is often correlated with intraspecific fights, and this type of behaviour is also predicated by Abelisaurs pathological bones. This interpretation is based on elephant seals fights, but there's also a clear inspiration from roosters. 
Skeletal reference by Jaime A. Headden