* Blackie (with a capital "B") is a common name for a person or animal, particularly a dog or horse, that is black in color.
* blackie (with a lowercase "b") can be used as a slang term for a black person, and this use is considered offensive and racist.
It's important to be aware of the different meanings and connotations of this word and to use it with sensitivity.
If you are referring to a person or animal, it's always best to use a more respectful and descriptive term, such as "black dog" or "African American."