At the AK Park, slow down and look at the animals in the entry paths. Also have the kids pay attention to the sidewalks. They change thruout the park. You will see animal prints almost everywhere and the pavement changes in each part of the park. Disney worked hard to make the asphalt in Dino land to look like an old parking lot. I know its hard for small kids to stand still, but if you just stop and look in the aviaries they can see some really cool birds up close.
If you are staying at the AK Lodge take advantage of all the displays. Talk to cast members on duty, they can show folks a lot of cool things.
The secret for the AK & AKL is to just slow down and look.