Very nice expression on the three bears, especially 2nd right. Their color blends nicely with the surroundings. I would try a slightly closer crop (off left and top).
Great colours and I agree with Ignacio's comments regarding a tighter crop. The cubs expressions really make this image, shame the little guy on the left is behind some grass though but unless we go about with stuffed animals we can't get it perfect everytime :)
Like this image, lovely expressions and lots of interest from the animals. Nice tonal range throughout the image.
Disagree with above comments regarding cropping, I wouldn't crop tighter as I think you would lose the environmental feel coming from this photograph. The bears are looking into the space on the left (their right) and this allows them room to do this. I think wildlife photographers have a fixation about cropping in tight instead of sometimes allowing the animals to be in their environment doing what comes naturally. In fact, it allows those of us who don't see them wild to get a feel of their environment.
I like the wider crop as present, but if anything I'd just take a sliver off the top to eliminate the yellowish band along the top edge. These look like very curious little cubs, and you've captured their personalities quite well :).