This article was published in Scientific American’s former blog network and reflects the views of the author, not necessarily those of Scientific American Sometimes, zoo animals behave unnaturally.

A green-rumped parrotlet (Forpus passerinus), widow and her nestlings. When the nestlings spill out of the nest cavity begging for food as these chicks are, this indicates that they aren't getting ...

Infanticide and adoption in the animal kingdom have long puzzled scientists. While both males and females of many species are known to kill the babies of their rivals to secure sexual or social ...

Many bachelor mammals, including lions, mountain gorillas, monkeys, and mice, attack and kill the offspring of other males--a form of infanticide--yet display parental behavior once they themselves ...

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Shortly after being born, a zebra foal’s mother tried to fight for its life when a stallion attacked. A video posted by Latest Sightings at the end of July, tinged by Brendan Vorster, shows a zebra ...