They are forbidden by Peter

to look in the least like him, and
they wear the skins of the bears slain by themselves, in which
they are so round and furry that when they fall they roll. They
have therefore become very sure-footed.

The first to pass is Tootles, not the least brave but the most
unfortunate of all that gallant band. He had been in fewer
adventures than any of them, because the big things constantly
happened just when he had stepped round the corner; all would be
quiet, he would take the opportunity of going off to gather a few
sticks for firewood, and then when he returned the others would
be sweeping up the blood.