regardant
With the head turned toward the back of the body.
The dog was waiting for him, her paws on the second tread, pere regardant with a happy lolling tongue.
Watchful, attentive; contemplative.
To horse, to horse: thus once Eurydice, / With looks regardant, did the Thracian gaze […].
Where it comes from
From Middle English regardant, from Anglo-Norman regardant, Middle French regardant.
Adapted from the Wiktionary entry regardant (CC BY-SA 4.0).