why is Fetiukov such a scavenger?

Fetiukov never tries to earn things. Shukhov dislikes him because he joins in on other people's fortune. He lays back and waits for an opportunity to scavenge or scrounge,

"And then there was Fetyukov who had spotted him swiping the two bowls, and was now ogling the gang's four unallotted portions."