Anonymous wrote:She could be losing some of her sight and could be growling because she didn't see things coming at her from the side - your hand when taking something from her, your sister-in-law moving to shift her position, etc. We had a very sweet lab who got growly as he got older (12) because he simply could not see as well and felt "surprised" all the time. Definitely have your vet check her out.
We had a dog who slowly went blind. I suppose everything was shadowy to her, and she couldn't tell friend from foe, so she growled at everything.