I just brought home my new puppy over the weekend. She is 7 weeks old, and a chinese crested. My concern is this: when she leans forward (ex. to eat or drink) her hind legs come off the ground. She basically tips forward! Is this something I should be concerned about, or is it just because she is still so young? We have a vet appt. on Wednesday, but I thought I would see what advice I could find before then! Please let me know if anyone has had a similar situation. Thanks so much!