All in All

Real life Marfa and fictional Santa's Little Helper.

Considering Marfa's grandparents were probably not alive when Santa's Little Helper was first created, one can only assume there was a selective breeding programme going on to create her as a living counterpart.

Now all we need is a real life version of the Simpsons to be made and we can offer her up for casting (assuming they will CGI on the relevant genitalia)