Humans are animals. There is no distinction but the one that each individual person will place upon it. And we will, if it ever happens, put out own perspective on it. It's mostly dependent upon how much we can relate to this baby, and if we consider it to be like us enough to develop an emotional attachment of familiarity to it.
Some people find this hard to do with other human beings.
Some people find this hard to do with other human beings.
If you believe it, question it. If you question it, get an answer. If you have an answer, does that answer satisfy reality? Does it satisfy you? Probably not. For no one else will agree with you, not really.