Winter can be cold. Less food grows. Animals get ready for these changes. Here is how they do it.
Some animals migrate.
Many birds (above) move to warmer places. So do whales and elk.
Some animals hibernate.
ROGER TIDMAN—GETTY IMAGESThese animals are not active. They need little food.
Some animals nest.
WIRESTOCK/ GETTY IMAGESAnimals like skunks make a warm den. Others burrow underground. Soil does not freeze there.
Some animals get new fur.
JNEVITT—GETTY IMAGES; INSET: DAG FRODE HOLM—500PX/GETTY IMAGESThe fur of Arctic foxes turns white. This helps them blend in. Other animals grow thick coats.