Wenger last season signed a contract extension following Arsenal's FA Cup final win at Wembley which ended a nine-year wait for silverware.
The Frenchman, though, gave a rare insight into a subject which so often has been taboo when asked to reflect on just what will he do when he is no longer Arsenal boss.
"Sometimes I think, 'What is he (Sir Alex Ferguson) doing all day' you know, but he looks very happy in his retirement," said Wenger, now by far the longest-serving manager in the top flight.
"He is lucky because he is interested in horses as well. When he gets up in the morning, he can go to horses, practise or training."
Wenger, who grew up in the Alsace region near Strasbourg, added: "I love horses as well, but I don't go to races. I like horses in general because I am a farmer, you know.
"(I went riding) when I was a kid of course, but now? No, my back could not take any riding."