The feather texture makes it seem very hairy in appearance despite it being a range of different sized and thickness of feathers. The ears are curved and erected into a lion-mix style that I would believe a ear to look like when flying fast through the skies without becoming prone to ear infections. The hooked beak becomes jagged with sharp 'fang' styles creating a more dominate predator/raptor view. Including the rough tongue and scales suiting for a more reptile look.... The eyes are so beautiful yet frightening- You can tell this is a dangerous creature with much strength. Last but not least the posture and shape of the head and neck reminds me more of a lizard/dragon appearence rather than a Griffons... but Everything put together gives that Dragon-Griffon look I believe you were going for.
Well done! Bravo I say! The coffee color looks good too, lovely work!