The muscular does keep your body warm because say for instance you where working out. When working out you sweat, to cool you off and shiver to warm you up so your working out working your muscles.
It helps it stay warm.
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.
Example sentence - He had to wear layers of warm clothing to stay warm in the brutal climate.
by huddling they sharing their body heat
the size doesn't matter. there thick coat of feathers and blubber keeps them warm
It makes it easier to get food and shelter and to stay warm also to last longer from sickness/ stay healthy
Their thick coats help them stay warm!
to stay warm...
It keeps them warm in the cold weather, and also in the heat it helps cool them down.
sometimes it looks like its shivering, but its not. A bunny has a lot of fur to help it stay warm. if you cant get over the fact that i looks like its cold, put a blanket on it. ~$ana
Eat in very high calories. Where lots of warm clothes and the calories can help by giving your body enough energy to stay warm.
Fluids help you blood circulate efficiently which in turn helps your body to stay warm.