A collie dog lived in a barrel, tied by a chain, in the entrance to a farmyard.
A passing do-gooder became upset thinking about the poor life this collie was having. Eventually she could stand it no more and she untied the dog and took it home.
The collie never settled, became destructive and sulky.
Eventually the do-gooder took it back to the farm and chained it back up. It seemed happy.
I have been told this story by a friend of the do-gooder, so I believe it to be true.