Complex sentence: Some even depict it as a horned, dragon-like creature with a serpent-headed tail and small, round ears, while others have both "necks" of equal size so that it cannot be determined which is the rear head.
Split into simpler sentences: Some even depict it as a horned, dragon-like creature with a serpent-headed tail and small, round ears. While others have both "necks" of equal size so that it cannot be determined which is the rear head.