In article ,
says...
Hi All,

I assume this photo depicts possum droppings, but I'm not certain and
wouldn't mind identifying it out of sheer curiosity.

We do get possums on the verandah from time to time, but these droppings
look a little different to the usual 'offerings' left behind.
Note the thumbnail-like indentation in each dropping:

http://img300.imageshack.us/img300/3923/pooz.jpg

Thanks for any ideas.

cross-posted to aus.pets, possibly someone there knows...