The poison-arrow frog has enough poison to kill about 2,200 people!
55
Goldfish remember better in cold water than warm water.
29
By feeding hens certain dyes they can be made to lay eggs with multi-colored yolks.
40
The Chow and the Chinese Shar-Pei are the only dogs that have black tongues.
32
Cats recognise the voice of their owner, but never evolved to care.
22
All the pet hamsters in the world are descended from a single wild golden Hamster found in Syria in 1930!
34
An elephant trunk has no bone but 40,000 muscles.
24
Elephants are among the most emotional creatures in the world - they have even been known to rescue other animals, such as trapped dogs.
25