Starfish have most of their vital organs in their arms, so some can even regenerate an entirely new body from just one arm and a portion of the central disc.
While fish propel themselves with their tails, starfish have tiny tube feet to help them move along.
The nervous system of a starfish is spread through its arms and its “blood” is actually filtered sea water.
Starfish have no brains and no blood.
These monkeys spread urine on their hands and feet to leave a scent trail whilst moving about in the trees.
The squirrel monkey makes a ’chuck-chuck’ sound when it is feeding, to indicate its position to other members of its group.
The squirrel monkey is highly intelligent, and is known to have the largest brain to body mass ratio of all the monkey species.
The squirrel monkey uses a number of vocal calls to communicate with the rest of the troop. It has special warning sounds which indicate the presence of danger.
Adult squirrels have a lifespan of around 5 to 10 years in the wild.
Tree squirrels can rotate their ankles 180 degrees and climb down trees headfirst.