I was watching a nature programme recently and it showed some 1 inch long toads, it got me wondering why are they classified as toads and not frogs? The only difference I know of is the bumpy skin in toads and smooth skin of frogs, there must be more to it than that!

After reading Kurts most recent 'Meet the frog' (a toad commonly called a frog) I thought I'd ask you guys what makes a toad a toad and a frog a frog?

Thank you