What does "tipping" refer to in cavy showmanship?

Tipping in cavy showmanship specifically refers to the ability to properly display the back end of a cavy. This is important during a show, as judges need to evaluate the full body structure, coat quality, and overall condition of the animal, including the hindquarters. Showmanship requires exhibitors to present their cavies in a way that highlights all angles and features, making it crucial to correctly show the back end for comprehensive assessment.

The other options focus on aspects that are not related to the concept of tipping. For instance, the speed of a cavy running does not pertain to showmanship, as the focus is on presentation rather than performance. Weight adjustment might play a role in how the cavy is prepared for the show, but it is not what tipping specifically denotes. Lastly, while color change in the fur may affect a cavy's appearance, it is unrelated to tipping and does not represent a judging measure in showmanship.