Cov xim ntawm cov tshuab hluav taws xob zoo-tsim hluav ncaig yuav tsum muaj xim dub thiab ci. Qhov hluav ncaig hluav taws xob zoo li xim dub los ntawm sab nraud. Yog hais tias cov xim yog xim dub thiab lub suab ntawm lub suab tsis tau tsis txaus, nws txhais tau hais tias muaj dej teeb meem, thiab qhov dej ntau ntau dhau. Tag nrho cov hluav ncaig txhawm rau txhawm rau txhawm rau soj ntsuam xim ntawm ntu yuav tsum ua kom pom tseeb thiab dua. Yog tias koj pom cov daj daj, nws txhais tau hais tias cov hluav ncaig muaj cov khoom tsis huv ntau, thiab cov ntaub ntawv siv tshauv thiab cov duab hluav taws xob yuav ib txwm dhau ntawm tus qauv.
Qhov tsis hnov tsw ntawm hluav ncaig tsis tas yuav muaj pa taws, tab sis yog tias muaj pa taws, yuav tsum muaj tus ntxhiab tsw. Cov pa hluav taws tsw tseem yuav muaj feem cuam tshuam rau kev ua zaub mov noj thiab kev lag luam yoov tshaj cum, thiab qhov no kuj yog qhov tshwm sim ntawm cov pa roj carbon monoxide tsis tiav. Thaum lub sijhawm carbonization txheej txheem, thaum qhov kub ntawm qhov cub kub txog ib qib twg, cov yeeb yaj kiab carbon txias yuav tsim nyob rau saum nplaim hluav ncaig. No zaj duab xis tawv dub thiab ci ntsa iab yuav ntom nti nrog qhov nce ntawm qhov kub ntawm qhov kub. Saib xyuas cov txheej no, ib txwm Nws tuaj yeem pom tias cov hluav ncaig yog carbonized. Kev kub nyhiab ntawm hluav taws kub thiab hluav taws kub uas tsis kub thiab hluav taws kub kuj tuaj yeem txiav txim tau yooj yim ntawm qhov no.