* Newborn cubs are usually dark brown or black with a gray undercoat.
* As they grow older, their coat becomes lighter and paler, turning to a more brownish-gray color by the time they are adults.
Fur:
* Cubs are born with a dense, soft undercoat that helps to keep them warm in the cold winter months.
* Their outer fur is longer and coarser and helps to protect them from the elements.
Size/Body Shape:
* Gray wolf cubs are born weighing around 1 pound (0.45 kg) and are about 12 inches (30 cm) long.
* They grow rapidly and can weigh up to 100 pounds (45 kg) and measure over 6 feet (1.8 m) long as adults.
Other Physical Features:
* Gray wolf cubs have large heads with rounded ears and big, dark eyes.
* Their legs are long and slender, and their tails are bushy.
* They have sharp teeth and claws that they use for hunting and defending themselves.