With 5 tournaments on the WSOP schedule today, the Rio is packed to the rafters as ballas and rail-birds rub shoulders in the crowded tournament room.

Don't feed the animals!

Here's a quick guide to the kind of animal life you might encounter if you brave the Amazon room.

5) The Zoo-keeper

Sometimes the animals like to wander outside of their pens, but on hand are the beefy security offices, patrolling the roped-off areas like vigilant guard dogs. Don't mess with these guys!

4) The Donkey

The donkey has come to blow his bankroll on strippers and gutshots. He'll probably be out by level two and double-fisting jaeger-bombs before level three. Watch out though, sometimes those gutshots hit!

3) The Shark

These guys want bracelets and cash and they're happy to leave a trail of busted donkeys in their wake. J.C. Tran is a prime example.

2) The Rail-Bird

Here to stalk/ support their favourite players, the rail birds come in many flavours, from those begging ballas for buy-ins to those who just want Chris Ferguson to pose next to them in photos.

1) The Whale

The whale is a made man who lights up his Havanas with burning $100 notes. Money means nothing to the whale who can drop $50k in the cash games without blinking.