Surely! Python lists have a native reverse() method (source), so you should use it. Here is an example of how to use the reverse() method:

>>> mylist = [12, 34, 56]
>>> mylist.reverse()
>>> mylist
[65, 43, 21]

Do you want to know more about reversing a list in python? I could show you more examples or how to implement the reversion yourself.

Since you also want cat pictures, here is one: