Ok, Hannah's weight has me concerned. We have never been able to put weight on her. I talked to her previous vet about heartworm and he did a test and said it was negative and she was put on heartworm preventative. A couple months ago we had to take her off the heartworm preventative though. She is still skinny even though we are feeding more than she should be eating daily (bag says to feed 2 and a 1/2 and we feed 3 cups mixed with canned). She is exercised daily (an hour walk in the morning and an hour of fetch in the afternoon). She is a little over a year old, and is a lab (for those who don't know). My old vet didn't seem concerned about it though. She doesn't look emaciated but you can feel her spine and if you touch her sides you can slightly feel ribs. She is about 55 lbs. She is always hungry even after eating a meal she is still looking for food (she eats 2 times a day 1 and 1/2 cups in the morning and 1 and a 1/2 cups in the afternoon). I will try to get a side shot of her standing up and post it so people can see what she looks like, maybe I'm just paranoid but when I look at the breed standards she just looks different than most labs. If my vet was not concerned about her weight and being skinny should I be concerned about it, I have to go to a new vet and I will bring it up to him since she is getting put back on heartworm preventative and she needs to get tested before going back on.