Wow, was this little pup ever a big hit on Christmas morning! My brother came over to get her at about four in the morning. When he got home he snuck in the house quietly and just let her loose on the kids' bed (they were sleeping in the same bed, since they were beside themselves trying to sleep on Christmas eve). This is NOT a shy puppy! She just went crazy licking the kids awake. I'll post pics when my brother sends some to me.
The kids have changed the poor pup's name about 10 times already. First it was Ginger, then Gigi, then Happy, and today she is Princess Buttercup.
Thanks for all the guesses about her breed! It is really fun to see the difference in opinion. I think she is going to be a medium-sized dog. I've raised both collies and shelties and she is definitely smaller than a collie pup at the same age (my collie girls tend to be about 50-55 pounds when grown) but bigger than the shelties were, except for my huge 35 pound sheltie - I think this pup will be about that size. I also think she is older than the shelter said because it seems like overnight she has gone from that stubby-legged puppy stage to being all legs.
No black on the tongue. Her tail is not very curly, she just carries it in a slight curve somewhat over her back. Her coat is plush with a short dense undercoat and rather sparse and also short outer coat.
Since I don't have Christmas morning pics to share yet, here are some on Christmas eve, playing with the collies. She learned VERY quickly that the collies play very nice unless you bite their feet and then you get taken down FAST! LOL My poor girls were looking for her everywhere Christmas day after she had gone home.