The number of bones that a frog has is 159. A frog has 33 bones in its skull while a human has 22. A frog has no ribs compared to a human who has 24. Frogs have 52 bones in their hind legs and 2 in their middle ear.
There is no scientific distinction between "frogs" and "toads," although most anurans are usually referred to as one or the other. Anurans have several synapomorphies that distinguish them from other amphibians.