Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6
Dogs sometimes fake being sick to get attention.
26
Gorillas can catch human colds and other illnesses.
205
Unsinkable Sam (nickname of a German ship's cat) who served on 3 warships, one German, two British, all sank in action. The cat survived each sinking, floating away on wooden planks to rescue.
19
Cats recognise the voice of their owner, but never evolved to care.
22