#4 Tab sis tus dev no kuj yuav txawv. Nws puv lub zog. Kev ua ub no nyob rau sab nraum zoov pab kom sib npaug ntawm cov khoom thiab cov terrier tseem nyob ntawm lub cev thiab lub hlwb.
#5 Cov phooj ywg me plaub-legged nyiam dev kev ua si xws li agility.
Obstacles raws li ib feem ntawm ib tug cleverly tsim aub chav kawm cam kev txawj ntse ntawm tus me aub.