Time to crack on with some icons! I've sacked off the whole cartoon/illustrated animals in favour of more realistic pictogram versions taken from photos of the animals involved. I think the tone is in keeping with the more clean aesthetic I'm starting to develop.
Here's the finished pictograms. I would say which is which, but if I have to do that then I think I've missed the point! Seriously though they're all pretty obvious. How they're displayed is another problem entirely, but I like the way they look atm.