A new born bear is called a cub...
Any newborn bear, polar or otherwise, is called a cub.
9.3 in long
A newborn sheep is called a 'lamb'.
A newborn elephant is called a calf.
probably 20 kilograms maybe
two pounds
A newborn panda is much smaller than other bear species. It typically weighs around 3 to 5 ounces, while newborns of other bear species can weigh up to 20 ounces.
Newborn deers are called "fawns".
for about 2 months
There is not a general term for newborn animals. Different animals are called different things. For example, newborn chickens are called chicks.
About 3-10 pounds.
Newborn Bush Babies are called bushels in most countries except for Africa, where they are called Gala.