In PAW Patrol, what are Tuck and Ella?

Tuck and Ella are Golden Retriever twins in PAW Patrol.

Tuck and Ella are a brother-and-sister pair introduced as Mighty Twins. Their special power lets them grow larger or smaller, allowing them to solve problems that require unusual changes in size. The twins operate as a pair rather than as separate members of the original core team.

Their Golden Retriever breed and twin relationship are defining character details. The two pups appear in Mighty Pups stories, where meteor-related powers give several characters extraordinary abilities.

They are sometimes mistaken for ordinary littermates or for members of the main rescue roster. Tuck and Ella are specifically twins, and their shared identity is central to their Mighty Twins concept.