ROUS

Or Rodents of Unusual Size - in the film Princess Bride, the Dread Pirate Roberts declares his disbelief in their existence, only to be promptly attacked by one.

He'd have come off rather worse against a rodent of the most unusual size so far discovered by science - Josephoartigasia monesi tipped the scales at over 1000kg.

See also an summary article in the Grauniad

When Giant Penguins roamed the Earth

BBC News reports on the discovery of fossilised remains of a tropical penguin (another case of getting the press release out to coincide with the paper being published).

Not sure if people would find a five foot tall penguin with a spear-like beak as cute as various people seem to find modern variants.