MR Black and MR Brown

I have known these two for a long time. They live on the street at the cafe called Popular. They arrived there 5 years ago as stray dogs and were adopted by the people of the neighbourhood who feed them and give them water.I sometimes meet them out in the countryside when I am walking with Jim. They seem to spend the night roaming the countryside together and when we meet them they are on their way home.
I now understand why they sleep all day at the cafe-it's because they are up all night!!