Oh those nature folks... ~shakes head~
They have such a curious logic...

I think that some see the basic human shape and that is as far as they give thought to it.
It's kind of like some of them think, humans have a head, I have a head, humans have a body, I have a body... They don't seem to worry with basics like prospective or proportion... Their logic seems to be almost kind of like a young child and artwork...

I see all the nature folks you mention, but you know, to me, the bunny in the first picture kinda of favors a child... so perhaps it distorts it when you enlarge it.
mmm... maybe...

I like this picture very much. It's quite busy...
Cool!