A mom giraffe can one have one giraffe each time pregnant. They are dropped 6 feet to the ground as she gives birth standing up. The baby is born 5 to 6 feet tall. This baby was 2 weeks premature and is 5 feet tall. Giraffes can communicate with other giraffes several miles away and they can kill a lion with one kick. They are most susceptible to being attacked when a baby or when drinking water. They sleep 20 minutes a day and their eyes are as big as tennis balls. They are 16 to 20 feet tall in height when reach maturity.