A couple days ago I changed part my cats' food. They didn't eat it. So I thought I will change it back to the original food and everything will be OK. But they stopped eating that as well. It's been 2-3 days now, and I am real worried. Please help!
They must be seen by a vet. It is not healthy for a cat to go without food for longer than 24 hours. They can develop what is called Feline Hepatic Lipidosis. The vet will check their liver values to make sure they are not going into liver failure and can also give them something to stimulate their appetites.
If you have a syringe (without the the needle) you can add some pedialyte and gently place the syringe inside the cheeks of their mouth and slowly dispense the liquid.
You can then do that with some watered down can food and see if you can help stimulate their appetites.
It is imperative that they get some food into their system right now. The longer they go over the 24 hour period, the worse it can be for them.
Some cats do not immediately go into failure, but no one knows how each individual cat will respond to not eating.
Yep if I saw any one of my cats not eating they'd be to the vet that day and if I noticed it at night I'd be rushing them to the ER. It's something that needs looking into immediately.
Oh, sweetie, I agree - call the ER vet immediately. If there's any wait at all, do you have any plain chicken or turkey baby food at home (no onion), or Friskies? Sometimes the 'cheap' foods are very attractive to kitties to kick start their appetites, but I think you really need a vet now.