https://www.darlingdownszoo.com.au/gallery/big-catsHe was miles away, if right outside the noise would have shook the house. You can hear the roar from 8 kms. We have been right alongside a few in full roar. It is not scary he is just telling other males he is there. Humans are not lion food they will only attack under certain circumstances which you avoid.
Yes, I took Mrs Fliegs out to the Darling Downs Zoo a few years back, and we fed some Lions chunks of meat with tongs through a wire fence, and yes, they had a roar alright when 'scrapping' amongst each other! I remember vividly that roar!
It was an amazing experience, but I'm not at all sure I like to see animals like that in enclosures.
The lion on his hind legs with his front paws on the fence, was well over my head, it was a pretty awesome experience even if I don't necessarily agree with keeping animals like that.
Also was a Bengal Tiger (?)
One thing for sure, they knew when the meat was coming! It came from the main building and whether it was smell or sound or time, they knew they were about to be fed!