@fredkese - Let's enjoy your time of staying home. Your dog is definitely cute and adorable. I think he did that because he needs your attention and care. Belly rub may be the way we can interact for affection to our dog. And this is a good body gesture to show that you and your dog are bonding well.
Please give him a big hug and have a great Sunday. Be safe, healthy and strong.
!ENGAGE 20