Lek mating females away from the hotshot. A manipulative experiment using the little bustard, "Tetrax tetrax", was done to test the various lek evolution models. The experiment involved varying the size and sex ratio of leks using decoys. To test whether or not the presence of a hotshot determined lek formation, a hotshot little bustard decoy was placed within a lek. After the fake hotshot was added to the lek, both male and female visitation to the lek increased. The hotspot model considers the female density to be the catalyst for the clustering of males. This model predicts that leks will form
Ben 10: Secret of the Omnitrix one Ben destroyed during his battle with Animo. Tetrax is disappointed that Ben will continue being a hero and he begins to accept Ben. The Tennysons' hope of having a normal day of recreation, however, is dashed by a newsflash of 'zombies' attacking the mall, leading them to rush to the rescue calling this a normal life for the Tennysons. "Ben 10: Secret of the Omnitrix" was released three different times, each featuring a different alien destroying Animo's DNA bomb. Ben uses Heatblast in the first, a new form called Eye Guy in the second, and XLR8 in the third.