when you are cold you shiver because the body by vibrating is trying to get blood flowing through the veins which will then warm you up by shivering the body is constantly moving and will eventually start moving your core body temperature up unless your in the middle of the south pole with just a pair of speedo's or a bikini on.
Yes some reptiles shiver they shiver when they get cold but remember that only SOME of the reptiles shiver not all of them do but yes they shiver
no penguins do not shiver they never never ever get cold
it was so cold even the dog started to shiver
yes
to sheever
They shiver
chatter or cold
it is when you are cold or you are hunger
shivering is said to warm your body when cold.
A cold shiver ran down my spine at the dead of night.
yes
Shiver, chatter