How do mammals living in colder regions and seals living in polar regions able to reduce the loss of their body heat ?

How is yak adapted to live in cold regions ?

Compared to those living in tropical region, mammals living in the colder regions are characterised by

What are the adaptations seen in animals living in polar regions ?

Mention two adaptations the mammals of colder regions have, to minimise the loss of body heat.

Animals living in colder region have shorter tail and ears as compared to the animals living in warmer regions. This phenomenon is called