Ekuqaleni yafuywa njengenja yasefama, i-Rat Terrier iyakwazi ukuzingela iimpuku kunye nezinye ii-parasites ngaphezulu nangaphantsi komhlaba, kunye nokulandelela kunye nokubamba izilwanyana ezincinci. Uphaphile, ukhaliphile, unyanisekile yaye uyathobela, uzele amandla nomdla. Ifunda ngokulula, ivana nezinye izinja. Ubundlongondlongo okanye iintloni aziqhelekanga kwinzala.
I-Rat Terriers zinja ezinobubele, ezinamandla, kunye nezinja ezichwayitileyo ezizama ukuba sisazulu sengqalelo yabanye, azikhe zikruquke zizo.
Ngokwendalo, i-Rat Terrier inentlalontle kwaye inovelwano. Ukunyaniseka kumniniyo. Uqhubana kakuhle nabantwana osele udlala nabo. Ifuna ukuhlalisana okuhle, ngakumbi kwiinyanga ezintathu zokuqala zobomi. Ngaphandle koqeqesho olufanelekileyo, unokuba nenkani ngokugqithiseleyo nokuzimela. Iimpawu zokubukela zibonakaliswa, isimo sengqondo kubantu abangabaziyo asibathembi.