Any guesses to what mix breed my pup is?

[Cinnamon00]

When I adopted her almost a month ago the shelter said she was a terrier mix. I looked up some terrier pics and by her coloring and several facial features the closest she looks to is a smooth hair fox terrier but I've had a lot of people also tell me she looks like a long-hair Chihuahua. I kinda see it too in her little face. Now I'm really curious . Of course she can be either of these two breeds and something else completely . I guess I can have a DNA test done but I have to wonder if those are really expensive.

Anyway here is a pic of Luna.

What do you guys think?

[Flyinsbt]

I'd guess Papillon mix.

[porchpotty]

I guess he's a Terrier mix.

[ruffiangirl]

I would guess a rat terrier mix as well.

[MicksMom]

I almost want to say she's Italian Greyhound/Pap mixed with something else. She's cute.