Now guy's, the smaller bear ain't no cub. Go back and look at it again.
The size of the head in relation to the size of the body is about all we have to
go on in this clip, with just a little help from the way they move. On cubs the
head is big in relation to the body size. The older the bear gets the smaller the head looks in relation to body size.
As for movement, cubs in their first and second year tend to sort of "scamper"
along as they run while the older bears appear to sort of roll along. The older
they get the more pronounced this rolling motion becomes. We don't get to
see much of the smalller bears movements in the clip, but the bigger bear
definitely demonstrates the rolling motion of a big bear. I think royinidaho is
probably fairly close in his assesment.