The author of The Seven Mysteries of Life recites an incident of a baby giraffe separated just after birth from its mother and kept separate and alone until it was a teenager.

No mirrors and no other giraffes.

When they were then re-united the young giraffe could not imagine that such a strange looking animal as the mother giraffe could have anything to do with him and rejected all overtures from her, persuaded it was an absolutely bizarre crittur.

Reminds me of the old farmer who finally saw one in a traveling circus and declared "They're jest ain't no such animaL".

a