Which ones smaller cavailer King Charles spaniel or spaniel?

That's a bit of a tricky question! You're comparing two different things:

* Cavalier King Charles Spaniel: This is a specific breed of dog. They are small, with a weight range of 13-18 pounds.

* Spaniel: This is a broad category of dog breeds, including the Cavalier King Charles Spaniel.

So, here's the breakdown:

* A Cavalier King Charles Spaniel is smaller than many other breeds within the Spaniel category. For example, a Cocker Spaniel is larger than a Cavalier King Charles Spaniel.

* However, there are smaller Spaniel breeds than the Cavalier King Charles Spaniel, such as the Papillon or the King Charles Spaniel.

Ultimately, it depends on which other Spaniel breed you're comparing it to!