Yuav ua li cas thiaj nrhiav tau lub hnub nyoog ntawm tus dev?

Cov me nyuam mos (txog 3 lub lis piam)

Cov me nyuam yug los tsis muaj hniav thiab nrog lawv ob lub qhov muag kaw. Thaum thawj lub lim tiam ntawm lub neej, lawv tsis tuaj yeem taug kev thiab pw tsaug zog feem ntau.

Puppies (los ntawm ib hlis mus rau ib xyoos)

Kwv yees li 2-3 lub lis piam tom qab yug me nyuam, menyuam dev qhib lawv lub qhov muag, tab sis lawv qhov muag tsis pom kev. Thaum muaj hnub nyoog ib hlis, lawv twb sim taug kev, lawv pib nyiam lub ntiaj teb nyob ib ncig ntawm lawv. Mis cov hniav tawg thaum muaj hnub nyoog 3-4 lub lis piam: cov fangs tshwm sim thawj zaug, tom qab 4-5 lub lis piam, ob qhov nruab nrab incisors tshwm. Thaum 6-8 lub lis piam, qhov thib peb incisors thiab molars erupted. Feem ntau cov menyuam dev muaj tag nrho ntawm 8 cov hniav mis los ntawm 28 lub lis piam - me me, puag ncig, tab sis ntse heev. Cov hniav no, uas yog xim dawb los yog qab zib, tsis yog nyob ze ze li cov hniav mus tas li.

Tom qab 16 lub lis piam, kev hloov ntawm cov hniav pib: cov mis nyuj cov hniav poob tawm, thiab cov molars tshwm nyob rau hauv lawv qhov chaw. Cov menyuam dev nyob rau lub sijhawm no yog qhov tsis xis nyob thiab sim txhua yam "los ntawm tus hniav". Los ntawm 5 lub hlis, cov neeg laus incisors, thawj premolars thiab molars erupt, los ntawm rau lub hlis - canines, thib ob thiab plaub premolars, thib ob molars, thiab, thaum kawg, los ntawm 7 lub hlis - peb molars. Yog li, nyob rau lub sijhawm mus txog ib xyoos, tag nrho 42 cov hniav loj hlob hauv tus dev.

Cov tub ntxhais hluas (los ntawm 1 xyoos txog 2 xyoos)

Cov dev ntawm me me thiab nruab nrab breeds nres loj hlob hauv ib xyoos, thiab qee qhov loj tshaj plaws loj hlob mus txog 2 xyoos.

Nyob nruab nrab ntawm 6 thiab 12 lub hlis, lawv mus txog hnub nyoog laus, cov ntxhais pib estrus. Tab sis qhov no tsis tau txhais hais tias txij no mus rau koj tus tsiaj los ua ib tug neeg laus: nws txoj kev txav tseem tuaj yeem ua tsis taus pa, nws lub tsho tiv no tseem fluffy thiab mos, thiab nws tus cwj pwm tsis tuaj yeem hu ua hnyav. Thaum lub hnub nyoog no, cov quav hniav pib tsim ntawm cov hniav, thiab thaum kawg ntawm lub xyoo thib ob ntawm lub neej, tartar tuaj yeem tsim, uas ua rau ua pa phem.

Cov dev laus (los ntawm 2 txog 7 xyoos)

Thaum muaj hnub nyoog 3 xyoos, qhov saum ntawm qee cov hniav tau pom zoo tshem tawm, thaum tsis muaj kev saib xyuas zoo, pob zeb thiab cov pos hniav tshwm. Cov plaub hau yuav tawv. Nyob ntawm seb hom tsiaj, cov plaub hau grey ntawm lub muzzle tuaj yeem tshwm sim thaum muaj hnub nyoog 5 xyoos, tus dev kev ua ub no txo ​​qis. Thaum muaj hnub nyoog 7 xyoos, cov dev loj tuaj yeem pom cov tsos mob ntawm kev mob caj dab thiab lenticular sclerosis (qhov chaw xiav-grey ntawm lub hauv paus ntawm lub qhov muag uas feem ntau tsis cuam tshuam rau qhov muag).

Cov neeg laus (muaj hnub nyoog tshaj 7 xyoos)

Qhov pib ntawm kev laus yog nyob ntawm kev sib xyaw ntawm cov noob caj noob ces thiab ib puag ncig, yog li nws txawv ntawm dev mus rau dev. Nyob rau hauv lub sij hawm ntawm 7 mus rau 10 xyoo, kev hnov ​​lus thiab tsis pom kev tsis zoo, cov hniav poob tawm, thiab kev pheej hmoo ntawm cataracts yog nce. Lub tsho tiv no feem ntau ua pob, qhuav thiab nkig, thiab cov plaub hau grey nce ntxiv. Tus dev tsaug zog ntau dua, nws cov leeg nqaij qis, daim tawv nqaij poob nws elasticity. Thaum lub hnub nyoog no, dev xav tau kev saib xyuas tshwj xeeb thiab kev noj haus. Txhawm rau ua kom lub neej ntev ntev, nws yog ib qho tsim nyog yuav tsum tau kho lawv tus cwj pwm thiab kev xav nrog kev nkag siab, nrog rau kev tshuaj xyuas tsis tu ncua thiab tsis quav ntsej tus kws kho mob cov lus pom zoo.

10 2017 Lub Rau Hli

Hloov tshiab: Kaum Ob Hlis 21, 2017