I have a female Dum (about six years old- said the vet) that is a rescue I took on in May. From the beginning she ate like a garbage disposal even during medical treatments. She put on really good weight (I got her up to 15.2 Lbs). When the weather turned colder she stopped eating. I know that this happens during this season (I'm trying to take it as a sign that she feels better from the condition I got her in). I can't help but be nervous as its now been 100 days since her last meal. She acts just fine. No signs of any stress and has only lost 2 oz. I offer her live and f/t but she just flicks her tung and ignores it.

How long does this behavior last for? Is there something I can do to encourage her? Advice? Reassurance?