Update the following Wikipedia article about cats by adding one new sentence that is not already mentioned in the article.
Input: Cats are small, carnivorous mammals in the family Felidae, often referred to as the domestic cats to distinguish them from wild members of the family.
Cats are exceptionally agile and are widely believed to be one of the most intelligent domestic animals.
Cats are small, carnivorous mammals in the family Felidae, often referred to as the domestic cats to distinguish them from wild members of the family. They are popular pets and can be found in a variety of colors, sizes, and temperaments.