As a noun:
* "The mutt wagged its tail excitedly as we walked by." (referring to a mixed-breed dog)
* "He rescued a scruffy mutt from the animal shelter." (referring to a dog of unknown breed)
* "That mutt is a real handful, but I love him." (referring to a playful and energetic dog)
As a verb:
* "The dog was mutting softly in its sleep." (referring to a dog making soft, low sounds)
* "Don't you dare mutter about my cooking!" (referring to speaking in a low, grumbling voice)
As a slang term:
* "That guy is a real mutt." (referring to a person who is unattractive or undesirable)
* "He's just a mutt who hangs around the bar." (referring to a person who is not very successful or well-respected)
Important Note: The slang use of "mutt" can be considered offensive, so it's best to avoid it unless you're sure your audience understands its informal nature.