I'm no expert Deb but the following reference may help you decide:
Platypus
The Platypus is an n aquatic animal of the order Monotremata, found only in Australia. It resembles a beaver, being about 12 to 16 inches long, covered with fine red-brown to gray fur, with a broad, dorsally flattened tail, webbed and clawed paws, and a broad flat, duck-like beak.