Eastern Grey Kangaroo, Macropus giganteus
Had a couple of shot of the young at play a week or so back.
This one I pulled from the archive.
This is the real deal. These guys are not playing. The big bloke in the background is either the next contender or the coach. Every time a blow was landed, he'd rise up on his tail and call out, like he'd just taken the hit.
That forward thrust from the tail can be felt here.
They infict severe injuiries and occasionally enough to cause death.
The battle continues here