This video is called Green Iguana Documentary Part 1.
An Internet site in Belgium on nature has a Top 10 of its subjects in which most visitors are interested.
After its page on nature in general at #1, the rest of the top 10 is:
2. Green iguana
3. London planetree
4. Walnut tree
5. Horse-chestnut
6. Red squirrel
7. African grey parrot
8. Swallowtail butterfly
9. Barn owl
10. Maple tree