Funny you mention him being agressive. I visited the Tierpark on two days in the trip. In a different part of the day or the day after I saw a pair in the outside exhibit which looked very peaceful, I have uploaded photo of them too, but I wonder if it was the same pair as is seen here? Then they would have had two Asiatic Lion males at the same time.
Correct, this is inside, and the only thing inside the Alfred Brehm House you can actually call an exhibit. Everything else is a cage. But outside the cage are two rather small but all right old grottos for big cats, as well as new (i.e. built within the past 10 years) for Cheetah and Snow Leopard.
