Puppies yug kiag li tsis muaj cov hniav. Nyob rau hauv thawj lub hlis lawv pub tsuas yog rau niam niam mis. Los ntawm thawj mus rau ob lub hlis ntawm lub neej, cov me nyuam twb loj hlob ib co ntawm cov hniav ib ntus, uas yog hu ua chaw yuj nyuj. Ib qho tag nrho ntawm 32 - 16 molars, 12 incisors, thiab 4 canines. Thaum tag nrho cov hniav ib ntus tshwm sim, cov me nyuam me pib txoj kev tshiab - cov khoom noj pib hloov mus tas li. Raws li txoj cai, qhov no tshwm sim los ntawm peb lub hlis ntawm lub neej ntawm tus tsiaj. Nyob rau hauv me nyuam me, tus hniav hloov yog yuav luag tib yam rau txhua tus tsiaj yug (nws tsuas yog me ntsis raws li lub sijhawm).
Cov txheej txheem ntawm cov hniav hloov hauv cov me nyuam me
Cov hniav tsis muaj qis qis thaum thawj xyoo ntawm tus tsiaj txhu. Thawj ntog yog cov mis nyuj incisors, hooks. Los ntawm qhov kawg ntawm lub hlis thib tsib, cov npoo thiab nruab nrab incisors raug hloov. Cov mis yas yuav ntog ib nrab xyoo. Lawv ntev dua cov hniav tag nrho, nyob nruab nrab ntawm cov hauv paus hniav thiab incisors. Cov kabmob feem ntau, lawv tso tawm qhov tseeb, ib qho ntawm ib qho, thiab xaus li ntawm xya lub hlis.
Cov mis nyuj yog me me, lawv poob los yog cov qe menyuam nqos tau lawv. Sai li sai tau qhov hniav ib ntus yuav poob, qhov pom tshwm tuaj nyob rau hauv qhov chaw, nws hlob sai heev. Cov hniav tuaj yeem loj hlob los ntawm cov kwj deg uas cov kua mis tau poob. Yog li, yog tias qhov hniav ib ntus tsis tau poob, ces nws yog qhov zoo dua los tshem nws kom lub qhov ncauj tsis tuaj yeem tsis loj hlob hauv qhov chaw tsis muaj tseeb. Nws yog ib qho tseem ceeb tias cov tsiaj muaj ib qho kev raug mob.
Nyob rau hauv cov dev ntawm loj breeds, cov hniav hloov sai dua.
Thaum kawg ntawm lub kaum hli, tus tsiaj yuav tsum tsis txhob muaj mis nyuj cov hniav. Thaum nws yog ib xyoos, tus menyuam mos noj qab nyob zoo yuav muaj tag nrho cov hniav dawb-ntse ntse.
Tus neeg laus tus aub tau 42 hniav, ntawm 20 leej nyob rau saum toj thiab 22 yog hauv qab.
Cov me me los sis ntsias
Txhawm rau kom muaj kev noj qab haus huv cov hniav, tus menyuam dev cov khoom noj yuav tsum muaj cov khoom noj thiab cov calcium uas tsim nyog. Cov kab mob hauv cov tsiaj tuaj yeem ncua qoob thiab kev loj hlob ntawm cov hniav tshiab. Thaum ib tug me nyuam mos pib hloov nws cov hniav, nws gnaws txhua yam indiscriminately - nws xav muab nws pob txha los yog pob txha mos rau qhov no. Thaum lub sijhawm no, tej zaum yuav mob plab, thiab ua npaws. Yog tias koj muaj teeb meem thaum lub sij hawm hloov, koj yuav tsum tau hu rau tus kws kho mob, tshwj xeeb tshaj yog hais tias tus tswv tsev npaj yuav nrog nws tus tsiaj hauv cov kev nthuav tawm lossis kev sib tw. Tom qab tag nrho, cov hniav zoo noj qab haus huv cov ntsiab lus ntawm tus dev thiab yog qhov lees paub ntawm nws qhov ntev.