couchant
Lying with belly down and front legs extended; crouching.
The dogs, with eager yelp, / Are struggling to be free; / The hawks in frequent stoop / Token their haste for flight; / And couchant on the saddle-bow, / With tranquil eyes, and talons sheath’d, / The ounce expects his liberty.
Represented as crouching with the head raised.
His crest was covered with a couchant Hownd, / And all his armour seem'd of antique mould […]
Where it comes from
From Middle English couchant, from Middle French couchant.
Adapted from the Wiktionary entry couchant (CC BY-SA 4.0).