hey guys it's Kerry lots of bears today
polar bear it is the largest extant bear species as well as the largest extant
predatory carnivore a male adult weighs up to 700 kilograms
the polar bear is a marine mammal because it spends many months of the
year at sea however it is the only living marine
mammal with powerful large limbs and feet that allow them to cover kilometers
on foot and run on land the only other bear similar in size to
the polar bear is the kodiak bear which is a subspecies of brown bear they
measure up to three meters in total length
after finding a female that is willing to mate there is intense fighting
amongst the males over mating rights
the challenger will lower his head pull his ears back and open his mouth
while roaring and bearing teeth
bites that often result in scars and broken teeth
weaker bears will submit to the dominant bear
partners stay together and mate repeatedly for an entire week
copulation is sometimes in excess of two hours at a time for several days in a
row
both males and females will mate with different partners
the newborn cubs in their litter may have different fathers
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notifications American black bear
they are found as far south as central Mexico and as far north as northern
Alaska and most of Canada their fur colour ranges from black to
light brown American and Asian black bears are
considered sister taxon and are more closely related to each other than to
other modern species of bears the rear foot length is up to 22 and a
half centimeters which proportionally is rather large for
a medium-sized bear their running speed is up to 48
kilometers they also have great physical strength
weight tends to vary according to age health and season
males can weigh between 57 and 250 kilograms
and a two meter head and body length and one meter at the shoulders
kermode bear or spirit bear both sexes of American black bear are
promiscuous males try to mate with several females
but the large dominant ones may violently claim a female if another
mature male comes near females tend to be short-tempered with
their mates after copulating
I've put all the different names of black bears in the description below
brown bear coastal brown bears are generally larger
than their inland grizzly bear counterpart
the claws on a grizzly bear are slightly longer and straighter
than those of a black bear
the large curved claws on the forelimbs are longer than those on the hind limbs
measuring up to 10 centimeters along the curve
a brown bear has a head and body length of up to 2.8 meters and a shoulder
height up to 153 centimeters
the rear feet of adult bears measure up to 36 centimeters
in large coastal or kodiak bare males the hind foot may measure up to 40
centimeters and 28 and a half centimeters wide
the largest kodiak backfoot was 46 centimeters long
brown bears have one of the largest brains of any extent carnivoran
relative to their body size and have been shown to engage in using tools
and using rocks which requires advanced cognitive abilities
during combat bears use their paws to strike their
opponents in the chest or shoulders and bite the head or neck
when males are large and strong enough to successfully compete with other males
for mating rights they will try to mate with as many
females as they can usually a successful male mates with two
females in a span of one to three weeks the adult female brown bear is similarly
promiscuous mating with up to four and even sometimes more males while in heat
and potentially breeding with two males in a single day
cubs can be of mixed parentage
other brown bears are the dall island brown bear
the alaskan peninsula brown bear kodiak bear
sitka brown bear
Stikeen brown bear and then the extinct ones are the
californian grizzly the mexican grizzly and the ungave brown bear
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