Ants (and all insects) are cold blooded so they don't keep their bodies warm.
The fur on their bodies keep them warm.
Warm bodies , they have fur to keep them warm.
They have Fur to keep their bodies warm.
Lots of layers help keep bodies warm, and minimizing the time out of doors.
To keep warm of your body
keeping warm
In all probability, when these fibres were made into clothing designed to keep bodies warm: yes.
No because they have short stocky bodies to keep them warm
No they are not.
to keep the cows warm and cover their bodies
All aquatic mammals keep warm by trapping the heat they generate under a layer of fat called blubber. The blubber keeps their heat from escaping and thereby keeps their bodies warm.
Fats stored in their bodies when awake is converted to energy to keep them warm and alive.