Why are all baby animals so cute?

One of the great side benefits of having done a lot of field work in Queensland Australia is that TPP has seen a lot of really unusual animals, but none is any more fun or any cuter than the platypus. TPP has observed them many times in several different places. They are apparently fairly common even if less commonly seen. Here's a nice article about the natural history of platypuses, and an image borrowed from the article. Never saw baby platypuses before, but they are sure are cute.