When is a Kangaroo a Wallaby or even a Euro? Actually this is a Euro silhouetted above a small rocky rise in the Pilbara... but it's for all intents and purposes it's a kangaroo...
... and this is a male Euro... male, because it is bigger... bounding over the rocky ground in the Pilbara. Euro's are usually solitary, especially the males.
Much of the Pilbara where Euro's graze is rocky hills and outcrops of rugged bare rock. When they feel threatened they can bound away a great speed where few safe footsteps seem to be available to them. They negotiate the uneven and rugged slopes with apparent ease. How do they do that so sure-footedly?
If you look at the photo above you can see why. Kangaroo's can bounce along on their powerful back legs in huge bounds covering a lot of ground before their feet need to hit the ground again. And when they do they only need to put their feet down in one small spot per bound unlike a horse for instance whose four hooves need to touch the ground much more often. But if you look at the Euro's legs and particularly it's feet you can see that they are very close together when their feet land on the ground.
And there you have it... a Euro footprint in the sand. It's almost one footprint! So when you see a Euro bounding through the rocks at great speed with almost no effort its down to this small footprint. It only has to see one place per bound to land it's feet.