Animals on the 4th of July

The first year in my then new house, on the evening of the 4th, there was a nice, large what looked like a cross of golden retriever and Irish setter running around in my front yard.

When my wife opened the front door, he came in and parked himself under a lawn chair on the back screen porch. Collar but no tag.

He was there all night and we couldn't budge him.
Finally around 2:00 am we were able to coax and drag him back to the front door and get him out.

Never saw that dog again.