What is another word for mongrel or mutt?

Here are some other words for mongrel or mutt, depending on the context and desired tone:

Neutral:

* Mixed breed

* Crossbreed

* Hybrid

* Cur

* Dog of mixed ancestry

Informal:

* Heinz 57

* Mutt

* Doodle

* Poochie

Formal:

* Canine of mixed lineage

* Mixed-race dog

* Composite breed

Literary:

* Composite

* Mélange

* Hybrid

The best word to use will depend on your specific needs and the context of your writing.