What is the smallest cocker spaniel dog?

There isn't a specific "smallest" cocker spaniel breed, as the size of a dog within a breed can vary due to individual genetics and breeding practices.

Here's why:

* Cocker Spaniel Varieties: There are two main varieties of cocker spaniels: the American Cocker Spaniel and the English Cocker Spaniel. Both varieties can come in a range of sizes, though the American Cocker Spaniel is generally smaller than the English Cocker Spaniel.

* Size Standards: Breed standards set out the ideal size range for each breed, but individual dogs can fall outside of these.

* Genetics and Breeding: A dog's size is influenced by its parents' genetics and the breeder's selection practices. Some breeders may focus on breeding for smaller dogs, while others aim for larger specimens.

Instead of focusing on the "smallest" cocker spaniel, you should consider the following:

* Your lifestyle: Do you have a small apartment or a lot of space?

* Activity level: Are you looking for a dog to go on long walks or do you prefer shorter outings?

* Individual dog: Each cocker spaniel is unique, so it's best to meet potential dogs in person to see which one is the best fit for you.

Ultimately, the best "smallest" cocker spaniel for you is the one that best suits your needs and lifestyle.