Question

New born mammals do not shiver in spite of the lower temp outside the womb .why

Answer 1

they are still unable to adjust to their new environment,ie; outside the womb

Answer 2

Answer:

Actually they do not need to shiver. The older individuals shiver in order to produce heat as the bones and muscles work out and creates heat that helps in regulating the temperature of the body. In new born they already have needed amount of the fat that keeps them warm in the colder environment so that is why they do not shiver.