Oh Platypus. I had no idea. I mean, I knew you were in a class all your own, or rather a family all your own (Ornithorhynchidae). Not only are you one of five species of mammal to lay eggs, but you (male platypus) have a venomous spur on your ankle. You use your tail to store fat. Your snout is flexible and rubbery. You have a reptilian type of walk on land. You use electrolocation to locate prey (detection of electric fields generated by muscle movement). Your eyes have double cones (most mammals don’t)which allows you to detect motion, luminance, and stuff we don’t even know about. Although you have waterproof skin, skin that covers your ears and eyes and nose when you are underwater, you can only stay in the water for 30-140 seconds.
You are an enigma inside a mystery inside a conundrum inside an amazing furry-egg-laying package.