puppy dogs yog cov tsiaj rhiab heev. Thaum yug los lawv nyob ntawm lawv niam tag nrho, vim lawv xav tau nws kev pab pub, tso zis lossis tau txais kev sov so ntawm lwm tus. Tsis tas li ntawd, cov menyuam dev yog cov tsiaj txhu, uas yog, lawv yug los dig muag thiab lag ntseg.
Nyob rau hauv tsab xov xwm no peb yuav daws tau ib qho ntawm feem ntau tsis ntseeg uas yuav tshwm sim thaum tuaj txog ntawm cov me nyuam mos ntxim hlub: Thaum twg cov menyuam dev qhib lawv lub qhov muag? Hauv qab no peb yuav piav qhia thaum lawv pib pom, lawv ua li cas thiab ntau lwm yam xav paub. Tsis txhob nco!
Ntsuag dev dig muag
Thaum yug los, cov menyuam dev lag ntseg thiab qhov muag tsis pom, vim lawv cov pob ntseg thiab qhov muag kaw. Lawv tsis npaj pom Daim tawv muag thib peb thiab iris tseem tsis tau txhais thiab muaj kev nkag siab zoo rau lub teeb, yog li thaum lub sij hawm muaj kev phom sij heev, daim tawv muag thiab cov plaub muag tiv thaiv lawv.
Lub paj hlwb tseem tab tom tsim thaum yug los. Thawj ob peb hnub, lawv siv lawv qhov kev nkag siab ntawm kev kov kom clumsily navigate rau lawv niam, uas muab kev sov so thiab zaub mov rau lawv. Qhov tseeb, lawv nyob ntawm nws rau txhua yam, txawm tias daws lawv tus kheej, raws li tus dev txhawb lawv los ntawm licking. Yog li, lub sijhawm no, yog tus menyuam dev tsis qhib qhov muag, nws yog qhov qub.
Vim li cas lawv yug los tsis ua kom tiav?
Tseem tsis muaj lus teb hais tias yog vim li cas altricial animal yug ua ntej lawv loj hlob. Peb pom cov theem nrab hauv ntau hom. Cov noog, piv txwv li, txhim kho sai heev, yog li txo qis lawv qhov cuam tshuam rau cov tsiaj txhu. Tab sis nyob rau hauv cov ntaub ntawv ntawm sucial mammals, nws yog suav hais tias lawv muaj ib tug qeeb thiab complex txoj kev loj hlob vim hais tias nws yog ze ze rau lub ntev thiab/los yog txawj ntse ntawm cov tib neeg..
Nyob hauv herbivorous tsiaj, piv txwv li, nws txawv kiag li, yog li peb tham txog precocial tsiaj Feem ntau peb tham txog prey, uas lawv xav tau. yuav tsum tau tsim kho thaum yug los, thiaj li yuav khiav tawm ntawm cov tsiaj qus
Tab sis, yuav siv sij hawm ntev npaum li cas rau cov menyuam dev qhib qhov muag?
Thaum twg cov menyuam dev qhib qhov muag?
Nws yog los ntawm thaum peb tuaj yeem pib txaus siab rau kev hloov pauv ntawm lawv txoj kev txav mus los, txawm tias cov menyuam dev lawv tseem nyob. lag ntseg thiab dig muag. Nws tsis yog txog thaum kwv yees li hnub 12 txog 16 thaum menyuam dev qhib lawv lub qhov muag, thiab hnub 14 thaum lawv qhib pob ntseg, txawm hais tias nws txawv ntawm tus kheej. Muaj cov dev uas siv sijhawm ntev dua ib lub lim tiam los ua cov kauj ruam no.
Txawm li cas los xij, qhov qhib qhov muag ntawm cov menyuam dev yog , uas yuav siv sij hawm ib hlis, lub sij hawm uas cov menyuam dev tuaj yeem qhib lawv lub qhov muag tag nrho. Tab sis koj puas pom meej sai li sai tau thaum koj qhib koj lub qhov muag? Qhov tseeb yog tsis muaj. Tsuas yog vim daim tawv muag tev rov qab thiab tso cai rau tus menyuam mos qhib qhov muag tsis tau txhais tias lawv pom meej.
Thaum twg cov menyuam dev pib pom?
Thaum tus menyuam dev thawj lub hlis ntawm lub neej, kev pom tsis yog qhov muaj txiaj ntsig zoo. Cov menyuam dev feem ntau siv hnov tsw, kov thiab saj, thaum hnov thiab pom kev loj hlob qeeb qeeb, ua rau nws nyuaj rau kev taw qhia thiab pom qhov pom ntawm theem no.
Lub retina ntawm lub qhov muag pom kev loj hlob ntawm nws tus kheej nrawm, thiab nws tsis txog txog hnub 25 uas cov menyuam dev pib hloov lub teeb thiab ntxoov ntxoo yam tsis tau txhais rau cov duab ntse. Raws li qhov tshwm sim ntawm qhov qhib qhov muag, kev pom kev pom kuj nce zuj zus, tsis yog mus txog peb lub hlis ntawm lub neej thaum tus menyuam dev ua tiav nws qhov muag pom tau tag nrho..
Txawm li cas los xij, txij li ib hlis ntawm lub neej, peb tuaj yeem pom tau yooj yim tias tus menyuam dev qhia kev txaus siab ntau dua paub ib puag ncig thiab ua si nrog nws cov kwv tij. Nws yog tom qab ntawd thawj cov kauj ruam pib thiab thawj cov hniav txhim kho, txawm tias lawv tseem tsaug zog ntau ntawm ib hnub.
Kuv tus dev yuav tsis qhib qhov muag, puas yog ib txwm?
Thaum tus menyuam dev yog 20 hnub peb yuav tsum pib saib nws ob lub qhov muag. Yog tias lawv tseem tsis tau qhib, nws yuav siv sij hawm ib ntus. Qhov ua rau tuaj yeem ua tau yooj yim li
Yog tias koj xav tias qhov no yuav yog qhov teeb meem, koj tuaj yeem ntxuav thaj chaw maj mam nrog cov kua qaub thiab ntxuav cov ntaub qhwv ntsej. Txawm li cas los xij, peb xav kom koj xub mus ntsib koj tus veterinary teb cov lus nug.
Yog tias koj pom cov qog nqaij hlav, mob lossis lwm yam cim txawv txawv, tsis txhob siv cov tshuaj loog thiab mus rau tus kws kho mob ncaj qha. Nco ntsoov tias nyob rau theem no cov menyuam dev tau muag heev thiab nws zoo dua tsis txhob muab tus menyuam dev noj qab haus huv.
Ib yam li ntawd, tseem ceeb heev uas peb tsis txhob sim qhib qhov muag ntawm cov menyuam dev los ntawm kev quab yuam. Yog tias koj kov lawv ntau dhau ntawm kev xav paub lossis ntxhov siab thaum lawv tsis qhib, koj yuav ua rau koj lub zeem muag puas tsuaj. Muaj peev xwm heev yog tias lawv tsis tau qhib nws yog vim lawv tsis tau tsim thiab, los ntawm kev quab yuam qhib lawv, koj yuav tso lawv tsis muaj kev tiv thaiv ua rau qhov muag loj heev Tsis txhob!ua tsis tau!
Dab pom dev
Thaum cov menyuam dev tau qhib qhov muag thiab ua kom lawv pom kev, lawv pom tau txhua yam kom meej. Txawm li cas los xij, cov dev pom li cas? Muaj tseeb koj tau hnov cov lus dab neeg cuav uas dev pom dub thiab dawb. Tom ntej no, peb piav qhia tias lawv pom tiag tiag li cas:
Dab muaj peev xwm sib txawv ntawm cov xim, txawm tias lawv tsis ua nws zoo li peb, tab sis lawv pom ib qho me me. Tshwj xeeb, tsis zoo li cov neeg, uas muaj peb hom xim receptors, dev muaj lub zeem muag dichromatic, ua rau rhiab rau ob xim: daj thiab xiav Hais tias yog, tsis muaj peev xwm. kom paub qhov txawv ntawm lwm cov xim, xws li liab thiab ntsuab.
Txawm li cas los xij, txawm hais tias lawv pom cov xim tsawg dua, lawv muaj qhov pom kev zoo dua li peb lub teeb pom kev tsawg. Lawv muaj ib daim tuab daim nyias nyias hu ua "tapetum lucidum" uas ua rau muaj kev cuam tshuam lub teeb ci, zoo li daim iav, yog li ua rau lawv pom kev hmo ntuj ntawm 4 mus rau 5 npaug zoo dua. peb. Cov txheej no kuj yog vim li cas peb tus dev lub qhov muag ci tshwj xeeb hauv cov duab.
