In 2011, a male tiger in India adopted a litter of orphaned cubs, taking on the role of ‘mother’. Wildlife officials say such behavior had never been observed before.
9
In Australia, there are spiders big enough to eat snakes.
20
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
Lobsters have blue blood.
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