Cat fur loss
My 7-year-old Russian blue is losing fur. She has never been out of the house. I acquired 2 of my deceased mother's cats 3 years ago, who are also totally indoor cats, and who are not losing fur. I have examined her closely, I know it's not ringworm. She has no lesions or redness on her skin, and she does not appear to itch. So, what could be the cause? Genetics? A vitamin deficiency?