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Bears

Bears. All Together Now…. Bears are the largest predators in North America Bears were common wherever there were trees Populations increasing in the northwestern US Nocturnal OMNI- vores : grass, berries, rodents, carrion , fish Fatten up for hibernation Solitary Boars, Sows, Cubs.

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Bears

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  1. Bears

  2. All Together Now… • Bears are the largest predators in North America • Bears were common wherever there were trees • Populations increasing in the northwestern US • Nocturnal • OMNI-vores: grass, berries, rodents, carrion, fish • Fatten up for hibernation • Solitary • Boars, Sows, Cubs

  3. Black Bear

  4. Black Bear • Found ALL over US: Sierra Nevadas, Rocky Mtns, Appalachian Mtns, Florida! • 400 pounds • 40 inches at shoulder • Cubs born in winter, usually twins • Climb trees for safety when younger

  5. Grizzly Bear

  6. Grizzly Bear • Light tips on fur = grizzled (old) • 850 pounds • 7 feet from head to rump • 3.5 feet tall • Excellent sense of hearing and smell; bad eye sight • Bursts of speeds to match a horse • Cubs born in winter, twins • Mature at age 10, will live up to 30 years • Large space for their egos and cubs

  7. Polar Bear

  8. Polar Bears • Largest bears in the world! • 1,400 pounds • 4 ft tall at shoulder • 8 feet from heat to rump • Carnivores, and some seaweed • SEALS! But will also eat birds, dead whales, humans… • Still make dens for giving birth! • Also give birth in winter, twins not common • Poor hearing, excellent eyesight and smell

  9. Weasel Family

  10. The Slimey Bunch • Known for musk • Fends off predators • Attracts males to mate • Also known for killing just for fun • Smaller predators • Slink into dens of food • Eat them and then live in their house… • Delayed Gestation • Embryos don’t attach to uterine lining until blood changes • Blood won’t change unless light is sufficient (photoperiod)

  11. Short (Ermine) or Long Tailed Weasel • Changes coat color depending on season • Found ALL over North America • Eat rabbits, rodents, and birds, or other weasels… • Litters of up to a dozen (12) born in spring • 14 inches long • 2 to 5 ounces. OUNCES! That’s a quarter of a pound…

  12. Mink

  13. Mink • Bigger than weasel • 28 inches long • 3.5 pounds • Solitary in dens, unless they are trying to mate • 4-8 kits are born in spring • Active at night & during day • Eat anything to keep up metabolism

  14. A slight controversy?

  15. Black-Footed Ferret

  16. The idiot of the prairie… • 22 inches long • 3 pounds • Almost always extinct… • ONLY EATS PRAIRIE DOGS • Has been protected by the government since 1967…

  17. Skunk

  18. Skunks • 30 inches long • Up to 10 pounds • Omnivores – berries, bugs, birds, frogs, eggs • Live in burrows or in tire piles • Found all over US • Litters of 4 or 5 born in spring • Will stay with mother through winter

  19. Otters – River and Sea

  20. River Otter • 55 inches long (4 ft) • 30 pounds heavy • Also prized for pelt! • Hunted extensively • Found in pockets all over US • Woodlands for cover • Can catch snakes and fish • Pups are born in spring in a den, under stream bank

  21. Larger Weasels – Badger and Wolverine • Body shape is different • Shorter legs with more strength • Digging • Attacking • Strong teeth and claws for ripping • Bodies very compact • Strongest animals for their size

  22. Badger • Digs for mice and gophers • Digs to escape enemies – fills dirt in behind! • Litters up to 5 pups born in late winter/early spring • 30 inches long • 20 pounds heavy or more • All of US

  23. no seriously…

  24. Wolverine • Largest weasel in the world – up to 60 pounds • Ferocious – will attack caribou and drive bears away from food and raid cabins • What it doesn’t eat, it marks with musk • Solitary • 2 or 3 cubs are born in late spring • Northwestern US and Canada

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