Well, I were ok with zoos when I was a little girl, but now, I don't like them. I have a little baby and I don't think I'm gonna take him to the zoo.
It's that having travel to Kenya (and so other many places) and see wild animals free it's a more gratificant experience. But I agree that if they are in a place for caring purpose, it's ok (like the pandas in Chengdu, but also there I suspected a little bit - there was a fine line between earning as much money as they could and taking care).
Nice photos! Regards,
Flor
PS - editing - also seeing these animals in the snow is a little sad :(