The bear looks faked/photo shopped
The elk look like they are all different sizes now that you mention it.
lHi guys. I'm the one who edits our photos to create banner ads and other graphics. I do use a version of Photoshop to do the editing so it is true that the above images have been "Photoshopped".
What I do is adjust things like contrast, brightness, sharpness, etc. to enhance the photo and get it to look as rich as possible. Almost all photos can benefit from at least some minor tweaks like this and some photos really need a lot of help to look good enough to use in advertising, etc.
But I can assure you that the bear and the elk are absolutely real and have not been modified in any way other than what I mentioned above.