Check out the platypus, a mammal that lays eggs and looks like a duck. Meet the odd-looking anteater that sucks up food like a vacuum cleaner and carries its baby on its back for months. Come face-to-face with a whale that surfs onto land to catch its prey. In this book, you'll learn about the life cycles of some fascinating mammals--from orcas in the sea to koalas in the treetops.