Roaring in Ljubljana ZOO

Today it was quite an interesting morning in Ljubljana ZOO. It was foggy and cold morning, so I knew there would not be a lot of visitors, so I was at the gate before ZOO opening time. My main “task” was to make a video with lion roaring. When I was near wolfs cage, I heard some very load and odd roaring. I know how lion’s roaring sound like, but that roaring was at completely different level. I went to lions cage to check it out. And then it started all over again. I do warn you. It’s loud!