I still wonder what the quote is from.
A lion can talk. A lion does talk. We can understand a little of it. Though, clearly, not much.
As in 'Grr, I'm going to bite you'? You know they mostly bite non-Christians.
I don't think lion grammar is that complex. And they mostly just talk to each other, of course, not to other species. No more than we do. No, probably less than we do. [thinks of himself talking to cats]
The point is that we can not understand the lion because we do not understand the context that he is speaking in. Humans have never been put in a zoo, or lived the life of a lion.
There would be points of commonality, however. The human and the lion both eat meat. The human and the lion may both hunt.
The conversation might be boring, but it could be understood, in part.