I'm sorry to be so late with my comment. As you know, I've been in a bit of an unpleasant health situation, so a lot of work has been left undone... But as always, I was really excited to see and read your edu-collage this week.
Most zoos only have one type of alligator at a time. So I haven't noticed the difference in size yet. But that is impressive. American alligators grow almost as big as some of the smaller crocodiles. I have learned something new again and this is nice. :-)
Not to be forgotten, it is a very beautiful collage!