Once I was afraid she was TOO thin. We had the vet weigh her - I was afraid she was at least ten pounds under weight - but she was healthy at about sixty three pounds, which is where she is now. She looks like a twig. We get, "Wow she's really small," a lot. She's not one of those labs that weighs one hundred pounds and is almost as big as a dane, she's a nice, medium-sized, sixty pound lab.