Each species has undergone eons of beta testing: animal vs animal, animal vs element, and even animal vs human. Take a peek under the 'hood' of these incredible critters. What does it take to make them top performers?
S1 E6 Mar 14 @ 8:30AM
S1 E6 Mar 14 @ 2:05PM
S1 E6 Mar 14 @ 7:25PM
S1 E6 Mar 15 @ 1:45AM
S1 E6 Mar 17 @ 6:50AM
S1 E6 Mar 17 @ 12:50PM
S1 E6 Mar 18 @ 1:35AM
S1 E1 Apr 04 @ 6:45AM
S1 E1 Apr 04 @ 12:10PM
S1 E1 Apr 04 @ 6:30PM
