It's the barter item! If you were reading it from the start, the bartered item was a Gazelle Carcass! Even though Joe lost, Hippo still wanted to share in his wealth. ^^
lol i didn't remember now i do XD haha i want to buy the game >.< but i don't have enough money since i went to the comic book store and started buying stuff ._. well i will have to save