Grug should use stick with string. Grug can use stick with string to make sharp stick fly at Urg. <|endoftext|> Grug need weapon to kill urg for taking grug rock, what use grug? <|endoftext|> Grug no like rock, grug like bone. Other grug say bone shatter when use, but grug take bone many hunt, easy carry no shatter. Bone even hide from shaman man look grug for rock, can take bone anywhere <|endoftext|> 