1) Polar bears live in the Arctic and feed primarily on seals. They are large carnivorous mammals that can grow up to over 800 kg. 2) At zoos, polar bears are fed a diet of meats, fish, and vegetables. Male polar bears eat around 15 kg per day while females eat 10 kg. 3) Female polar bears give birth in dens dug into the snow during hibernation in spring. Newborn cubs weigh around 600g but gain weight nursing for over a year before venturing out with their mother.

1. Polar Bear
Scientific Name: Ursus Maritimus
Classifications: Carnivora, Ursidae, Ursus
Length: Male 200-250cm, Female 180-200cm
Height: Male 160cm, Female 100cm
Weight: Male 400-600kg (max 800kg)
Female 200-300kg (500kg when
pregnant)
# of species: about 20,000 in the wild
Top left (Facilities for Polar Bears): Ueno Zoo has
started to raise polar bears since 1902; it was the
first time for a zoo in Japan to take care of polar
bears. The facility that simulates the north pole
was completed in 1927. At the time, it was rare for
animals to be shown without using cages or
fences.
Bottom left (Food): At the zoo, polar bears are fed
horsemeat, chicken, eggs, fish, apples and sweet
potatoes. The amount of food male polar bears eat
per day is 15kg and 10kg per day for female polar
bears.
*the top right is unnecessary so I decided not to
translate it 
Hibernation and Birth of Polar Bears
The mating season for polar bears is during the
spring; during this season, the male and female
polar bears meet one another. Once a female
polar becomes pregnant, she will dig a hole under
the snow and will hibernate.
The female polar bear will give birth during her
hibernation and will come out to land the next
spring. Each female will give birth to one or two
cubs. When a cub is born, it is only about
600grams in weight; however when it is ready to
come out to the land, the cubs will have gained
weight and will be about 10kg. It is only the female
polar bear that takes care of her cubs. Usually she
will take care of them for about two years.

2. Seasons:
Autumn-Winter (blue): when the sea water starts
to freeze, it is time for hunting. The winter time is
a harsh time for polar bears; the temperature in
the north pole during the winter is about -50
degrees Celsius. In order to live through the
winter, polar bears will search for seals. Once a
female is pregnant, she will make a burrow to give
birth in.
Spring (green): during the spring, polar bears will
mate; polar bears at zoos will show breeding
behaviors like they will if they lived in the wilds.
This is the season where cubs come out from their
burrows. Seal pups will be born this season which
makes it easier for polar bears to find their prey.
Summer (red): Ice floes melt during this season
and it is time for polar bears to be tolerant. Polar
bears will have to make a living off of flesh of
whales and plants until the sea water starts to
freeze again. If a polar bear does not have enough
food, it will try to stay quiet as possible in order to
save their energy.
Mechanisms of polar bears:
Bottom left: the long furs of what appears to be
white are actually semi-translucent; this makes it
possible for the sunlight to pass through their furs.
Also, the inside of their furs are hollowed which
makes it possible to keep their bodies warm.
Top left: polar bears usually swim in order to catch
seals. Their small heads and the line of their body
are suitable for swimming therefore makes it able
for them to swim long distance.
Top right: the subcutaneous fat keeps the bodies
of polar bears warm; not just that, it makes it
possible for polar bears to live on for months
without having to eat.
Bottom right: polar bears have a great sense of
smell and are able to smell prey from far distance.