A wallaby hastily bounds towards sparse gum trees.

Large marsupials like kangaroos and wallabies tended to avoid burrows, unless they had been flooded with rainwater; then they used them as watering holes.

It was most likely a mid-speed hopper, something like a swamp wallaby.

Abroad, studies have shown wildlife crossings save money and lives, both human and animal, including saving jaguars in Mexico and wallabies and bandicoots in Australia.

As well, dwarf wallabies had another surprise for the researchers: The two dwarf species had different teeth that were the biggest.