When dragonflies mate, their tails form a love heart.
22
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
Cats recognise the voice of their owner, but never evolved to care.
22
A group of unicorns is called a blessing.
304
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17