The most expensive cow in the world was sold $1.3 million.
160
Dolphins have names for one another.
18
Rats multiply so quickly that in 18 months, two rats could have over a million descendants.
33
A 4-foot walrus penis bone sold at auction in 2007 for $8,000.
202
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
Iguanas have two penises!
55
An ostrich's eye is bigger than its brain.
32