She can go a day or two without eating. In fact, it will sometimes help the digestive tract to fast a dog 24 hours, and then start with a bland diet.
I know Colitis, it is an old friend when I was feeding Canidae. It seems every other bag of dog food caused another bout of colitis in one of my girls in particular. The first time you see those red pools of bloody poo it makes you drop everything, rush to the ER and pay whatever it takes for bloodwork and the whole nine yards.
After a while though, you start checking other vital statistics before running to the vet. You hae a protocol that says if the dog is otherwise acting normal, fast the dog for 24 hours, leaving water available, and then start small amounts of boiled chicken and rice.
After getting off the dog food I was on though, my bouts of colitis went away.
I may be very wrong, but from what I understand about HGE, this dog would be dead if that is what it was. I have not had ANY experience with it though. Only a friend of mine from work had a dog that had this, I had a colitis issue, and asked the vet about HGE, and at that time he told me that it will kill a dog within 24 hours without treatment. I think Jean probably is better to listen to on this as she has such a dog.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC