* Neutral: The shelter dog was a happy, playful mongrel with a mix of breeds.
* Positive: The artist's mongrel style blended traditional techniques with modern influences.
* Negative: The politician's speech was a mongrel of contradictory ideas.
* Informal: I'm a bit of a mongrel myself, with family from all over the world.
It's important to note that the word "mongrel" can be considered offensive when used to describe people, as it can be seen as a derogatory term for someone of mixed race or heritage. It's best to avoid using it in that context.