Lobsters have blue blood.
476
In Australia, there are spiders big enough to eat snakes.
20
On some poorly researched trivia lists it is stated as a fact that a pregnant goldfish is called a twit. This is not true as goldfish lay eggs.
71
The seahorse is the only fish to have a neck.
12
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
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23