>Yes, that was easy, it looks exactly like a hedgehog.

Not to my eye, it don't, especially the front end, although I can't claim to have seen a hedgehog in the flesh.

http://yoyo.cc.monash.edu.au/~tzvi/Echigall.html

I've probably seen a grand total of 15 or so echidnas in my 42 years, so it's always a special moment when it happens. They are quite timid and, if no other refuge is available, tend to burrow into the nearest soil with a few powerful sweeps of their paws, which have long curved claws ideally suited for the task.

And what's the only other monotreme? (Hint on the picture page for those that need it.)