all about bunny

hi i have a baby bunny a lop/black well it has a wire cage with on of those tray under the wire with bedding and it seems to push all the bedding under the wire in the cages would a cage with out the wire at the bottom be better dose it not matter and dose the cage hurt bunny,s feet it sits/poops in its food dish is that normal and how do u tell if its a boy or girl and dose it need any type of bed to get off its feet..