At birth, newborn opossums are so tiny that an entire litter, consisting of up to 14 babies, can fit into a single teaspoon. They are so undeveloped that it's impossible for them to survive outside the mother.
I think opossums are super cute, albeit in a quirky way. With hairless tails and lots of teeth, to some people, these cat-sized, omnivorous marsupials are a bit ugly and off-putting. But I appreciate their odd appearance and how they are able to still.