Hi Peggy Sue,
They are indeed very well done photographs with what appears to be perfect lighting. I have no problem with zoo shots as long as they are labeled as such. Of the two pics, I prefer the top one the most (even though I like the crop on the 2nd). It appears to have a bit warmer on the head, and I think it gives a more appealing image. When I look at the first image, it almost looks 3D.
James