Here's a more detailed breakdown:
* Papillon: They weigh between 4-8 pounds, with females usually being smaller than males.
* Chihuahua: They weigh between 2-6 pounds, and like the Papillon, females tend to be smaller.
While they are both toy breeds, it's important to note that individual dogs within each breed can vary in size. However, their small stature is a defining characteristic of both Papillon and Chihuahua.