My husband thinks the dog checks on him but really I'm sending him to visit

My husband has had a really bad couple of years with depression and work annoyances (bad bosses, no upward mobility). On top of that, we found out that we can't have kids without risking severe or fatal injury to me due to worsening health conditions.

About a year ago we rescued a dog from the shelter and my husband has never been so happy. He's got his little adventure buddy to walk with, cuddle with when I'm in too much pain to be touched and they keep each other company on night shifts.

He'll always brag about how the dog comes upstairs to his home office to check on him throughout the day and give him attention if he has a morning shift.

What he doesn't know is that, if I hear he's having a bad work day, I've trained the dog with a silent signal to go upstairs and put his paws or head on my husband's lap. It always cheers him up.

Everytime he boasts about it, I just smile and nod, absolutely knowing our dog favours me more but I love seeing him so giddy about the attention so I'll never ever tell him the truth.