Litoria moorei "well known in Southwest Australia, its notoriety deriving from the call suggestive of a common name, the Motorbike Frog. It is a ground dwelling tree frog of the Hylidae family, one of only three species of Hylids occurring in that region. One common name comes from the male frog's mating call which sounds similar to a motorbike changing up through gears; it is also known as Moore's Frog, the Western Bell Frog, the Western Green and Golden Bell Frog, and the Western Green Tree Frog."
Happily, they also appear to resistant to chytrid fungus.
Oh he is pretty! That dull grey seems an unusual color for a frog. It's funny that he sounds like motorbike! I was watching this ~[link] video the other day with another cute frog from South Africa.