Cat
The cat's claim to majesty operates through an entirely different paradigm than traditional notions of grandeur. Feline majesty manifests in the absolute certainty of superiority radiating from an animal that weighs 4 kilograms and requires assistance to open doors. This is not the majesty of accomplishment but the majesty of unshakeable conviction.
A cat perched upon a high surface--bookshelf, refrigerator, precarious stack of items it has no business climbing--surveys its domain with the expression of an emperor reviewing conquered territories. The slow blink delivered from such a position conveys both acknowledgement of your existence and supreme indifference to your concerns. This is majesty distilled to its purest essence: power that need not demonstrate itself.
The phenomenon of the 'cat loaf'--wherein a feline retracts all limbs to assume a bread-like form--demonstrates that true majesty requires no particular posture. A cat maintains dignity in any configuration, a quality few beings of any realm can claim.