Luckily I just happened upon this site yesterday in hopes of finding help for my cat who has been suffering from a hyperthyroid problem for about a year. He's gotten very thin (gone from about 16lbs done to maybe 10) and despite eating a lot he is still always ravenous when I get home and VERY demanding for food and water. Well, I read many of the successes with ACV for feline ailments, so I gave it a shot. The irony is that I use it myself, but never thought to give it to my cat. Well, I just want to say that after only ONE day of giving my kitty half a capful of ACV (I am using unpasterized ACV with the "mother") mixed with a half capful of water - I'm guessing this a 1/4 teaspoon or so - I am noticing a MARKED improvement with my cat. Normally when I get home he howls impatiently for food or water or both. Tonight when I got home rather late he just kept resting on his spot, looking at me. At first I was concerned that he might not be well, but when I could see him just watching me and purring I realized he was actually more relaxed then I have seen him in a VERY long time. He hung out and sat with me for quite a while before giving me his usual head-butt to request food. This is a minor miracle for sure. I just mixed the water & ACV in with his wet food and the liquid out of the food can. He balked a bit the first time (he's had 3 or 4 doses since yesterday), but he still ate it. The first time I did a whole capful (50/50 with water) and I thought that might be too much so I cut back to 1/2 a capful after that. Well, just wanted to let everyone know that all your feedback is appreciated and I hope my kitty continues to improve!