Curiousity Killed the Cat

[affreca]

So I was trying to remember the second mammalian species that lays eggs (spiny anteater, Echidnas), and I accidentally read all about platypuses.
http://www.nature.com/news/2004/041025/full/041025-1.html
Weird little critters. If I was going to study biology, it would be in this.