ORANGUTAN BABIES: 3
A female orangutan stays with her mother into her teenage years – the longest childhood dependence duration for any animal in the world, other than human beings.
GIANT PANDA BABIES: 7
Giant panda cubs are proportionately the smallest of placental mammals. At birth they are just just 0.12 per cent of their mother’s weight. It’s about 6-7 per cent for a human.
A giant panda cub. © Tom Soucek/Design Pics/Getty
WHITE RHINO BABIES: 11
Female white rhinos usually give birth for the first time at between six and and seven years old. The calves stay with their mother for three years.
TIGER BABIES: 15
Tiger cubs are at the greatest risk from male tigers who may try to kill them to mate with the female.
A tigress with her three sub-adult cubs. © Archna Singh/Getty
AMERICAN BLACK BEAR BABIES: 20
A young black bear requires a lot of attention and stays with its mother for the first 16-17 months.
BLACK-TAILED PRAIRIE DOG BABIES: 24
Prairie dog colonies are called towns – the largest ever discovered covered 65,000km2 and was home to 400m animals
Black tailed prairie dog. © wellsie82/Getty
NINE-BANDED ARMADILLO BABIES: 54
Nine-banded armadillos hit this tally by giving birth to four identical quadruplets every year of their reproductive life.
VIRGINIA OPOSSUM BABIES: 108
At birth, a baby opossum is the size of a bee and weighs just 0.13g. A female can suckle up to 13 young at the same time.
Virginia opossum female with a baby clinging to her. © S.J. Krasemann/Getty
NORWAY LEMMING BABIES: 192
Norway lemmings start early. A female can get pregnant at just two weeks old.
EUROPEAN RABBIT: 360
An eye-watering number of young, but rabbits need to have lots of babies as only 15 per cent make it through the first year.
A young rabbit walking towards the camera. © Andy Rouse/Nature Picture Library/Getty
These facts originally appeared in BBC Wildlife Magazine’s The Big Book of Mammals.