Newborn Rabbits Cuddle Together to Keep Warm
Newborn rabbits compete for their mother’s milk, but when the temperature
drops, that competitive spirit gives way to cooperation:
Using infrared cameras (right) and rooms that slowly cool from
23°C to 11°C, researchers found that when the temperature drops,
less-than-5-day-old furless rabbit pups huddle to share heat.
Such cooperation, like investors making a joint business venture,
comes at a small private cost, as generating heat uses body fat that
in turn uses up oxygen, and using too much oxygen can stunt a rabbit’s
sharing heat, rabbits mutually ensure that their siblings don’t have
to use up too much energy to survive the cold, helping them all
live on to contribute to future bunny generations.