What do you think she is mixed with?

Heres my heeler mix, we think with lab:

She looks JRT to me.  Look at the cute little not quite half-floppy ears, which is what you usually see if you mix a dog with JRT or Greyhound type ears with prick ears.  She's got the thick legs I usually think of as an ACD, but there's so much variation in the herding breeds that are still being bred to work, it's tough to tell.  She's cute. 

She looks like a fairly typical BC/heeler cross to me. The symmetrical black markings on her face are especially suggestive of Border Collie. Incidentally, I've seen heaps of blue heelers that don't have any brown markings on them, so I wouldn't really call it characteristic of the breed. Anyway, a blue heelers ears would be fully erect I'd guess by about 6 months old. I could be wrong, but I'd say those ears were a little too big to be pure heeler. Again, they look kinda BCish. []

ORIGINAL: fuzzdomestic

She looks JRT to me.  Look at the cute little not quite half-floppy ears, which is what you usually see if you mix a dog with JRT or Greyhound type ears with prick ears.  She's got the thick legs I usually think of as an ACD, but there's so much variation in the herding breeds that are still being bred to work, it's tough to tell.  She's cute. 

I don't see JRT at all.  A few reasons...wrong hair type, too much ticking, and black/white is retty uncommon in the breed.  Also, JRT and Greyhounds have different types of ears...I am going to go with ACD.

ORIGINAL: ColleenC

ORIGINAL: fuzzdomestic

She looks JRT to me.  Look at the cute little not quite half-floppy ears, which is what you usually see if you mix a dog with JRT or Greyhound type ears with prick ears.  She's got the thick legs I usually think of as an ACD, but there's so much variation in the herding breeds that are still being bred to work, it's tough to tell.  She's cute. 

I don't see JRT at all.  A few reasons...wrong hair type, too much ticking, and black/white is retty uncommon in the breed.  Also, JRT and Greyhounds have different types of ears...I am going to go with ACD.

 
She's got the muzzle shape of a JRT.  I have seen that hair type in JRT crosses before, but it's not seen in purebred.  The black with white ticking is not seen in JRTs, that is part of the reason I thought it was an ACD mix, along with the thick legs.  Yes, proper JRT ears are different from Greyhound ears, you caught me on that.  I think I'm losing my mind.  There's a couple rescue JRTs at the shelter that have ears that fold back like a Greyhound and I've been getting really used to seeing them. 

Yeah, it is a common fault with JRTs to have ears like that.  I thought Colton's were going to be like that while he was teething.  But, fortunately, they went back to normal.

One thing I found interesting about Australian Cattle Dogs is color differences between blue, red, and even the queensland heeler.  All are the same breed according to the AKC, was hard for me to understand at first.  My parents have a full bred red from a working line.  Her nose is a bit pointy but that is how it should be to snap at the heals of cattle.  They are very narrow on the top and angle out towards the jaw if you view from the front.  From what I see your dog's snout doesn't come to the point that a normal ACD has, it looks more like a BC.   ACDs bodies are also little more round than a BC.  It's very common to see mixes of herding dog so my guess would be BC/ACD mix

This is probably the worst example but the only one I can find of these two dogs.  If you look at the red ACD in this pic you can see how pointy her noise is compared to my Giz who has the still pointy but wider typical BC snout when viewed from above.


Here is a somewhat better view of Trinty from the side.  Remember she is breed to work and not show quality so this is more what your pet quaulity heeler will look like.  Look more at the shape than color but both blue and red go by the same standards.

 

I agree, Xebby.

I saw a lot of ACDs in Mexico that looked very different to what I was used to seeing here. I saw some very dilute colouring and kind of unfamiliar head shapes. I also saw a lot of stumpy tails, which was cool, because they're not so common here. They have a reputation for being more snappy than the ones with a full tail, which I think is probably undeserved. IMO, the working dogs are more constant in looks than the pet dogs.

I met a lovely stumpy tail at someone's ranch in Mexico. I swear he knew we were both Australians. [] He singled me out and before I knew it he was in my lap.