At birth, polar bear cubs weigh about 454 to 680 g (16-24 oz.) and are about 30 cm (12 in.) long. Males are born slightly larger than females.
How big is a 1 year old polar bear?
When the cubs leave the den they weigh around 25-35 lbs i.e. 11 to 16 kg. At the age of one year the weight reaches 200-350 lbs i.e. 90 to 163 kg. At the age of two years the male polar bear cubs weigh around 400 lbs i.e. 181 kg and are usually taller than their mother.
How big is a four month old polar bear?
The newborn polar bear baby cubs are approximately 12 inches (30 centimeters) long and will weigh approximately 16-24 oz. (454 to 680 g). A male polar bear cub is usually a bit bigger at birth than a female cub. Before the polar bear baby cubs are one month old, their eyes will have opened.
Do polar bears eat their own babies?
Scientists believe that polar bears eat cubs in the late summer and autumn, when seals, their typical prey, are at sea and less available. “One of the only things that’s left to eat is, in fact, cubs of various ages,” says Ian Stirling, a biologist at the University of Alberta and Environment Canada.
Do polar bears have periods?
Polar bears have a seasonally constant estrus extending from late March to about mid-July. Minimum breeding age for females averaged 5.8 years and ranged from 4.5 to 8.5 years.
What is the average lifespan of a polar bear?
LIFE CYCLE: Polar bears can live up to 25 or 30 years in the wild.
What is the highest temperature a polar bear can live in?
The warmest areas in summer are inland regions of Siberia, Alaska, and Canada where temperatures can reach as high as 32°C (90°F). The ocean temperatures in the Arctic are about -1.5°C (29°F) in summer.
Do polar bears live in dens?
Polar bears set up dens in the snow and ice for shelter and to give birth. Cubs will stay inside for several months, until they’re physically ready to venture outdoors.