Current state: Pets are added to a single category/list.
Suggested state: A label is assigned to a pet and in turn, this creates a category/list where you can view it there. The added benefit is the ability to use multiple labels on one pet so it can be viewed in different types of lists and not just one like current state.
Use case: I want my showroom to have these categories: RWN/RN, Albinos, Pets with Effects, Seasonals, Retag name. My RWN named pet can also be an albino and stardusted. Using labels, the pet will now display when viewing RWN/RN, Albinos, or Pets with Effects lists. If this suggestions isn't implemented, I have to choose just one of those and lose out on my ability to create clear distinctions because pets can easily fall into more than one category.