The female pigeon cannot lay eggs if she is alone. In order for her ovaries to function, she must be able to see another pigeon.
65
There are more than one million animal species on Earth!
71
A group of unicorns is called a blessing.
304
According to scientific studies, a rat's performance in a maze can be improved by playing music written by Mozart.
46
A blue whale's aorta (the main blood vessel) is large enough for a human to crawl through.
52
All pandas are ‘owned’ by China. They rent them out to zoos for $1mil/year each with minimum of 10 years.
16
