It's hard to tell, the pictures are so small and I don't have anything that can properly make them bigger with out making it look bad >_>
but if the green one is frog in that position I do wonder what the children did to make him unconcious, lol! If not, it could be rocks I think i've heard that before.
The blue one could be frog, When I zoom in it doesnt look like ANYTHING anymore, at least from the pictures I have I see eyes, haha.