I love lions. And I am all gringling at your story of the unexpected lion roars. Yes, I should think SO.
We had a funny when I was little (not the body, just me). It was an ASAR outing at the Oakland Zoo, where the lions have part of a savanna with a treed creek area on a hillside. It's well-fenced, with a viewing platform that's above the ground level of the fence in places.
There was a maintenance worker there that day down by the fence, and one of the not-quite fullgrown but huge males took exception to him being so close and snarled and coughed at him... and then turned around and sprayed the area liberally.
Until then none of us realised big cats did that, just like small cats.