Keeping weight on 13y/o cat?

Hi all, I have not posted here very frequently but have a question concerning my older cat's weight. She is 13 years old (will be 14 in March), a female spayed Maine Coon. Two years ago she weighed close to 14 pounds (normal), and we just went to the vet last week and she is now down to 12 pounds. She had bloodwork done and everything is normal (no changes in liver/kidneys, no illnesses). She's been eating & using the litter box normally.

About 6 months ago I started feeding her 2 cans of Fancy Feast per day (instead of 1, which had been the norm her entire life) and put her on Royal Kanin Senior dry food, which she has done very well on. I am kind of concerned that she's lost weight even though I increased her canned food. She's got tons of hair so it's hard to visibly see any weight loss...though her spine is more prominent than normal, but her abdomen & ribs are the same as always.

Am I missing something? Is there something I can add to her food to help her get back to normal weight? Should I try a different type of canned food (though she is VERY picky)?

Thanks in advance

Do you know for certain if the bloodwork she had done including testing of thyroid function? I ask because hyperthyroidism (overactive thyroid gland) is common in senior cats and one of the classic symptoms is weight loss despite eating well. You may want to double-check with your Vet, if this test was done or not.

The bloodwork checked her thyroid functions and they were normal; my vet did the blood panel specifically for senior cats.

You may want to try a better wet food. A better quality brand with more nutrients or even better, made for senior cats, may help some.

My Coco lost weight at that age.
Her blood tests were good then.
The vet said sometimes older cats lose weight.
She is almost 17 now and weighs 6.4 pounds but she has Crf now.
She was8.2 pounds at age 14 from 10 pounds.

I was thinking of trying to change her to a different type of canned food, any recommendations? Most of the ones I've seen are lacking in the fish varieties (that's the only flavor she'll eat, she has never had any interest in chicken/beef/turkey) though. We had brief success with a Wellness variety of canned before but she got tired of it fast, and I also tried Eagle Pack but she would barely touch it, and I had to default to FF again.

My 14 year old NFC lost weight on senior foods, you might want to get her back on an adult formula if she is otherwise healthy and of average activity.
If joint health is a concern, supplement for that (with your vet's guidance!)
A lot of senior foods are "light" and go on the assumption that a senior cat is an inactive cat.

What were the actually values for her thyroid? Sometimes they are borderline, and some cats will show symptoms at lower levels.

Originally Posted by greeneyes86

I was thinking of trying to change her to a different type of canned food, any recommendations? Most of the ones I've seen are lacking in the fish varieties (that's the only flavor she'll eat, she has never had any interest in chicken/beef/turkey) though.

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Do they sell Animonda Carny there? It has few different fish varietes, here are links to their Fish Menue and Ocean series. I haven't tried the Ocean ones but those Fish Menue things are ones of my cats' favorites.