I have a question concerning upper dimensional black holes. Basically my question would be: what are 4d and 5d black holes? But being more precise about my question, I would like to ask about their properties. I guess there is an analogy between 3d black holes and the other ones, so is then the black hole entropy for a 4d-BH proportional to its volume? What would be the remarkable characteristics of the mass-energy and information carried by the Hawking radiation? Does it still makes sense to apply such properties like radiation in upper dimensional black holes?