This monster has a cat’s face, a tufted body and tail, eagle’s forelegs, and frond-like horns. It is period, dating from the mid-15th Century, as a badge of the de Veres, Earls of Oxford [Dennys 153].
The calygreyhound does not appear to have a default posture; the illustration shows a calygreyhound rampant guardant.
The Baron of Rivenoak bears: Quarterly Or and argent, a calygreyhound rampant to sinister between three laurel wreaths sable.
Arin Sturrock of Appin bears: Bendy of six argent and azure, a calygreyhound rampant guardant Or.
Eowyn Feemaister bears: Or, two calygreyhounds combattant guardant sable.