Dog yog cov tsiaj sib raug zoo nrog ntau yam tshwj xeeb. Ib yam uas cov dev tuaj yeem tso siab tau yog lawv qhov hnov tsw. Yog tias koj muaj ib tug dev, tej zaum lawv tau rub koj, ib zaug lossis lwm qhov, rau qee qhov tsis hnov tsw lawv khaws thaum taug kev. Qhov no ua rau peb paub tseeb tias cov dev qhov hnov tsw tsw muaj zog, tab sis nws puas muaj zog heev lawv tuaj yeem hnov qhov tsis zoo xws li dej?
Cov lus teb yog ob leeg yog thiab tsis yog, raws li lub ntsiab lus yog complex me ntsis -yog koj xav paub yog vim li cas, nrog peb.
Vim li cas dev thiaj hnov tsw zoo heev
Peb yuav tsum rov qab mus rau dev cov hauv paus hniav kom nkag siab tias yog vim li cas lawv thiaj muaj qhov hnov tsw zoo heev. Raws li koj paub, peb cov dev hauv tsev tau nqis los ntawm cov hma grey uas nws lub npe Latin yog Canis lupus.1 Grey hma yog cov tsiaj txhu uas nyob hauv pob khoom thiab xav tau kev tsim kom muaj kev hnov tsw kom ciaj sia. Lawv siv lawv cov zis los kos lawv thaj chaw, ib yam li dev, tab sis lawv siv lawv cov ntxhiab tsw los paub yog tias cov ntxhiab tsw los ntawm lawv cov pob khoom los yog ib pob txawv.
Lwm tus yam ntxwv ntxim nyiam ntawm cov hma grey yog tias lawv tau pom taug qab lawv cov tsiaj tau ntau mais, yog li qhov hnov tsw tsw zoo yog qhov yuav tsum tau ua.
Working Dogs
Feem ntau, peb xav tias dev yog cov tsiaj uas ncaj ncees, thiab peb hlub lawv rau nws, tab sis peb tsis tuaj yeem lees paub tias lawv tsim cov tsiaj tiv thaiv zoo heev thiab cov neeg taug qab zoo. Cov dev feem ntau siv hauv tub rog lossis ua tub ceev xwm dev rau lawv lub peev xwm tsw ntxhiab. Hauv cov tub rog, lawv raug cob qhia thiab feem ntau siv los nrhiav tus neeg ploj lawm. Lawv kuj tuaj yeem siv los ua tus xa xov los nqa cov ntaub ntawv los ntawm ib qho chaw mus rau lwm qhov. Nrog tub ceev xwm, lawv feem ntau siv los nrhiav cov khoom tsis raug cai ntawm ciam teb lossis thaum tshawb nrhiav hauv tsev.
Qee qhov kev tshawb fawb tshiab txawm hais tias dev yuav tuaj yeem kuaj mob qog noj ntshav hauv qee tus neeg tsuas yog "sniffing" thaj tsam ntawm lawv tus tswv lub cev.
Tus yam ntxwv ntawm dej
Uantej hais txog qhov tsw ntxhiab ntawm dej thiab seb dev puas tuaj yeem paub nws, peb yuav tsum paub qhov txawv ntawm cov dej huv thiab dej uas peb siv lossis pom sab nraum peb tsev. Cov qauv ntawm cov dej, thaum nws ntshiab kiag li, tsuas yog ua los ntawm oxygen thiab hydrogen. Txawm li cas los xij, cov dej uas peb siv hauv peb lub neej niaj hnub feem ntau tuaj yeem muaj lwm yam khoom tsis zoo, xws li chlorine, sodium, lossis magnesium.
Txawm tias lawv hnov ntxhiab tsw txawv txawv, dev tsis tuaj yeem hnov tsw nruab nrab dej-dej yam tsis muaj lwm yam khoom. Txawm li cas los xij, yog tias cov dej tsis meej thiab nws muaj lwm yam tshuaj lom neeg lossis cov khoom sib txuas, cov dev tuaj yeem hnov nws. Vim li no, cov dev kuj tuaj yeem hnov tsw los ntawm dej, thiab qee tus dev txawm raug cob qhia tshwj xeeb kom hnov tsw hauv qab dej kom pom tib neeg thiab lub cev, tshuaj, thiab lwm yam. Cov dev kuj tuaj yeem hnov tsw dej hauv pas dej thiab cov dej ntws uas muaj cov khoom tsis zoo thiab cov organic zoo li cov nroj tsuag lossis tsiaj.
Aub's Smell
Aub lub siab hnov tsw muaj zog heev uas kwv yees tias 10,000 txog 100,000 npaug zoo dua tib neeg. Cov dev tau tsim cov kab mob olfactory loj heev, uas yog cov qauv uas ua haujlwm rau kev hnov tsw tsw. Hauv qab no koj tuaj yeem pom qee qhov zoo nkauj ntawm tus dev lub olfactory system, uas ua rau lawv muaj txiaj ntsig zoo dua rau tib neeg. Peb yuav tsum tau piav qhia txog cov txheej txheem no kom koj tuaj yeem kawm paub tias tus qauv ntawm tus dev lub qhov ntswg qhov ntswg zoo li cas, ua rau lawv pom qhov tsis hnov tsw hauv txoj kev ntxim nyiam.
Lub olfactory epithelium muaj ob hom hlwb, nrog ntau lab tus olfactory receptor hlwb thiab cov hlwb txhawb nqa. Cov hlwb txhawb nqa muaj lub luag haujlwm sib txawv, tab sis qhov tseem ceeb tshaj plaws yog tiv thaiv cov epithelium los ntawm ntau yam kev puas tsuaj. Ntawm qhov tod tes, olfactory receptor hlwb yog lub luag haujlwm rau cov ntxhiab tsw uas dev hnov. Txhua lub xovtooj ntawm tes muaj ib qho olfactory receptors, thiab nws tau kwv yees tias dev muaj txog 220 lab olfactory receptors.
Dog muaj qee yam kabmob, hu ua Jacobson 'organ, uas muaj lub luag haujlwm hauv kev hnov tsw, tab sis nws lub luag haujlwm tseem ceeb yog kuaj cov pheromones pab kev yug me nyuam. Lub teeb olfactory ua rau ib feem loj ntawm tus dev lub hlwb thiab muaj lub luag haujlwm rau kev ua cov ntxhiab tsw txawv, thiab olfactory cortex yog ib feem ntawm lub hlwb cortex uas pab dev txiav txim siab raws li qhov tsw.
Vim li cas kuv tus aub tswm lub tais dej?
Dej tsis muaj ntxhiab tsw, tshwj xeeb tshaj yog hauv cov tais dej. Koj cov dev tuaj yeem sau ntau cov ntaub ntawv los ntawm lub tais dej los ntawm kev hloov lossis txav mus los. Yog tias koj pom koj tus dev tsis hnov tsw nws lub tais dej, nws tuaj yeem hnov qhov me me ntawm cov zaub mov uas tau poob rau hauv lub tais. Cov dev tuaj yeem hnov tsw tsw nyob ib ncig ntawm lawv lub tais zaub mov, xws li lwm yam tsiaj uas siv nws lossis txawm tias koj tsis hnov tsw los ntawm kov lub tais dej. Lawv lub tais dej kuj tuaj yeem muaj qee cov tshuaj ntxuav tais diav, ua rau nws tsis zoo rau dev vim nws tuaj yeem ua rau lawv lub qhov ntswg.
Final xav
Txawm hais tias dev tsis hnov dej, peb paub tseeb tias lawv cov ntxhiab tsw tawm hauv ntiaj teb no. Tus dev qhov hnov tsw yog kwv yees li 10, 000 txog 100, 000 lub sij hawm zoo dua li tib neeg, yog li koj tsuas yog xav txog txhua yam lawv tuaj yeem hnov qab yam peb tsis pom. Thaum cov dev tuaj yeem hnov txog qee yam hauv dej, lawv tsis tuaj yeem hnov tsw ntshiab, nruab nrab dej nws tus kheej. Lwm zaus koj taug kev koj tus dev, nco ntsoov cov lus no thiab ceeb toom txhua yam uas lawv tuaj yeem hnov qab. Koj yuav nkag siab tus cwj pwm ntawm cov dev zoo dua thaum koj kawm lawv lub peev xwm.
