Michele: Our guide pointed out some Wallaroos from the bus that took us around for our 4 hour walk through the Undara lava tubes. Wallaroos?
This guide had very typical Aussie sense of humor. Their humor is a little dry and very clever like the British but more brash and direct than even American humor. It reminds me a fair bit of Deaf humor. For example, just as we were about to leave our first of several lava tubes the guide flashed us a large geologic map of the region. Knowing perfectly well that I am a geologist he said "Here is the geologic map, it has heaps of information. But if we let you look at it we will be here all day so off we go!" Cruel guide!
So when this same guide pointed out Wallaroos on the right side of the bus, we didn't know if we should believe him. Was he not sure if this marsupial was a Wallaby or its larger cousin the Kangeroo so he just mashed the names together?
After prodding him on the issue we learned that there is indeed species called Wallaroo that is, no kidding, larger than a Wallaby and smaller than a Kangaroo. http://en.wikipedia.org/wiki/Wallaroo