I had a 150 lb Shepard/Collie mix that used to do the same thing. He was big enough that his whole ass would be on the couch with his front paws in front of him--straight to the floor. He'd sit right next to me, watching tv with me. I really miss him. His name was Wylie, and he was a 3 time loser. My ex brings him home one day from the shelter. He was brought back to the shelter by 3 different families because he was getting too big for them. We were his 4th.
Aw! No such thing as a dog too big! I never understood people who get a dog and then return it when it doesn't fulfill what they "wanted"... who does that?? Must've been he was meant for you. Fate finally figured it out.
Kind words. Thank you so much. He was my buddy. Big ass moose that he was! I actually lived in Pa when we had him.