Tus dais dub (Ursus americanus) muaj ntau nyob rau hauv lub tebchaws United States thiab Canada. Bears feem ntau yog omnivorous, tab sis kev nyiam noj zaub mov txawv los ntawm cov ntsaws ruaj ruaj rau tag nrho carnivorous polar bears mus rau assorted zaub rau cov herbivorous loj spectacled dais (Tremarctos ornatus).
Yuav dais herbivorous?
Bears yog omnivores uas muaj cov txheej txheem digestive uas tsis tshwj xeeb zoo ib yam li cov neeg carnivores. Qhov tseem ceeb sib txawv yog tias bears muaj ib qho elongated digestive ib ntsuj av, ib tug adaptation uas tso cai rau dais ntau npaum digestion ntawm zaub dua li lwm yam carnivores (Herrero 1985).
Puas yog bears dub herbivores?
American black bears yog omnivorous, txhais tau tias lawv yuav noj ntau yam, suav nrog cov nroj tsuag thiab cov nqaij. Lawv cov khoom noj muaj xws li cov hauv paus hniav, berries, nqaij, ntses, kab, larvae, nyom, thiab lwm yam succulent nroj tsuag.
Yuav muaj pes tsawg hom dais?
Muaj yim hom: Asiatic black bears (tseem hu ua hli bears), bears xim av (uas suav nrog grizzly bears), giant pandas, North American black bears, polar bears, sloth bears, spectacled bears (tseem hu ua Andean bears), thiab hnub bears. Qhov nruab nrab, bears tuaj yeem nyob ntev txog 25 xyoo hauv cov tsiaj qus thiab 50 hauv kev poob cev qhev.
Tus dais twg yog tus phooj ywg tshaj?
Kuv yuav venture hu Asmeskas Dub daistus phooj ywg tshaj plawsdais.
