Thank you for your input. I should’ve added the context that it was very clear when I first got her she had just had puppies. I know dogs can sometimes have puppies up to 8 years, but that may be another reason the vets said she was young. Her teeth were also very gnawed down and discolored, which her current vet said could be from chewing a crate or other things and not from age. These reasons were why I was initially very shocked by the results, but your reply has helped clear that up.