Pluto from Mickey Mouse is officially described by Disney as a mixed-breed dog, originally introduced on screen as a Bloodhound-type dog in his earliest appearances.

Short answer

  • Disney’s official stance: Pluto is a mixed-breed dog.
  • In his first cartoon appearance, he functioned as a Bloodhound, which strongly influenced his design.

How Pluto started

Pluto first appeared in the 1930 Mickey Mouse short The Chain Gang as a nameless bloodhound used for tracking, not yet Mickey’s pet.

His design in that short leaned heavily on classic Bloodhound traits like long ears and strong scent-tracking behavior.

What Disney says about his breed

Over time, Disney settled on describing Pluto simply as a mixed-breed dog rather than a specific pedigree.

This lets him represent a “everyfamily dog” type character, similar to many real-life mutts people keep as pets.

Why he looks “hound-like”

Fans and pet sites often note Pluto’s hound-style body, floppy ears, and strong nose, and still associate him with Bloodhounds.

The most accurate way to phrase it is that he is a mixed-breed dog with clear early Bloodhound influence in his design and behavior.

TL;DR

Pluto isn’t officially a purebred Bloodhound or any single breed.
He’s canonically a mixed-breed dog, designed from the start with Bloodhound- style traits and used as a bloodhound in his debut cartoon.

Information gathered from public forums or data available on the internet and portrayed here.