The primates and felines are the cutest by far. The baby ocelot is particularly beautiful, to my mind.

I read somewhere that we all have a built-in reflex to feel love for faces with proportionally oversized eyes, which is characteristic of the faces of helpless infants.

Kittens and puppies share this characteristic with human babies and the young of our closest evolutionary relatives, the monkeys/apes/lemurs.

The zebra and pig babies really don't look much different from adults ~ just smaller.