Well if there is more than 1 I'm sure they huddle together.
the way puppies and dogs can stay warm besides there fur is they huddle in a certain position and the heat from there fur and what ever they are laying on produces heat that keeps them to stay warm or they can also stay warm by cuddling up to you and laying on your lap that produces heat to help stay warm or they sit next to a heater.
Cats have fur to keep them warm when they are cold.
by there fur or the sun there beds or blankets
Cats are fluffy because it's how they stay warm when it's cold out. They don't have anything to keep them warm besides their fur.
Rabbit fur
because there fur has blubber in it too keep them warm
The fur on their bodies keep them warm.
to keep warm
to keep warm
its fur keeps it warm
Air trapped in their fur keeps them warm
Simply for the reason all dogs have fur, to keep warm