Peb pab tib neeg tau txais kev saib xyuas zoo dua sab hauv thiab sab nraud hauv tsev kho mob los ntawm kev hloov pauv tas mus li kom cov kws kho mob, cov kws saib xyuas neeg mob thiab cov neeg saib xyuas muaj cov khoom lawv xav tau nyob qhov twg lawv nyob. .