On July 11 Paris weighed 7 lbs. On August 1 she weighed 6.7 lbs. On August 15 she weighed 6.5 lbs. Yesterday she weighed 6.3 lbs. She was weighed on the same scale at the vet's everytime. She eats all of her food and doesn't act like she feels bad. Should I be overly concerned with this weight loss or is this normal. She is 10 1/2 months old.