I confess I was too busy taking pictures to actually touch any of the screens! But the animals on each screen were housed in a large terrarium behind each screen. I think if you touch on any particular animal, you get more information about it.
I can't blame you for being to busy in MOLA, because from the pictures I see (including yours) it seems to be a great complex worth spending lots of time in.
I'm really no fan of video screen/touch screen signage in a zoo exhibit. They always either break or take ages to spool through (we had to stand for 10mins out of an hour or so in the SeaLife at Berlin just to make sure we'd seen all the labels for jellyfish, which were all on one screen in the entrance foyer of the exhibit - i.e. in the way of the flow of visitors - and had each species over several screens).
As a supplement to traditional species labels - excellent. If they're the only signage, they knock points off the exhibit in my book.
