Pupdate from Hannah Brower (thank you!):
GCR Fennek (Texas x Grace, March 2020) is looking very grown up these days! He's roughly 22" at the shoulder, and a few months ago was at 43#s. Believe it or not he is starting to fill out, but never stops moving so still looking like a lanky teenager. We finally seem to be growing out of the teenage rebellion phase though, so life is good!