Raw food introduction from canned food

HI all, 

I've been feeding my cats Tiki Cat and they LOVE it like any other cat would. However, I decided to change it for the better to start feeding them raw food. I bought some raw food from Hare-today, and used their supplements. Mila LOVED it like how she usually loves food and gobbles everything up, but Athena was hesitant until she warmed up to it. Two weeks later, they both were loving it. However, I made my second batch and followed everything and instruction like I was supposed to and for some reason Mila started to throw up within half hour after she eats the raw food. Athena is perfectly fine. When Mila threw up, it looked like she threw up a piece of poop and hairball. 

Does anyone every had this problem where one cat was fine and the other wasn't for the raw food? I'm a dedicated cat guardian, and I can't solve this case.

Today, I gave her teaspoon of the raw food after she ate her canned food, and she still threw up. I thought it was because she ate too fast, but maybe it IS the meat??!

Please help!

Welcome to The Cat Site; sorry it's under these conditions.
Did you use the same type of meat? Was it ground?
You said the vomit looked like poop and hairball: could you elaborate? I trust/hope it didn't *smell* like poop!
Ritz throws up because of acid indigestion, but it is food she has just eaten. I fed prey model raw, so I see chunks of meat/liver/kidney.
And yes it is not unusual for one cat to like raw and the other cat, not. It is also possible for a cat to develop an allergy/intolerance to a protein quickly or slowly.
For Mila, I might try giving her a small piece of a very different type of meat: if she threw up on beef, try chicken; if chicken, try pork or beef. Grocery store meat is fine.

chobitsu said:

Today, I gave her teaspoon of the raw food after she ate her canned food, and she still threw up. I thought it was because she ate too fast, but maybe it IS the meat??!

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Welcome, chobitsu!

Some cats apparently throw up raw food if it's too cold but you probably haven't changed anything... One of our cats sometimes throws up her raw food because she eats it too fast: she has a tendency to inhale her food and then try to go and finish her sister's portions. We've slowed her down by flattening her foods out in her bowl more and serving the raw food a little wetter. I'd been trying to get the cats down to less feedings a day -- two or three instead of three or four -- but she seems to be less of a piglet if we feed more often. We work at home so that's very doable. (The cats are rescue cats from a "too many cats in the apartment" situation and had some food issues when we adopted them last December... they'd done pretty well for months but seem to backslide every now and then so their feeding is always a bit of a work in progress!)

Good luck!

Agree with @LisaHE. My male cat Tim tends to inhale his food, and if he eats too much too fast, he barfs. We add water, we flatten and spread out his food, and for any given meal, we split it into two-three plates with at least 30 minutes between to slow him down. Otherwise he'd gobble it all, barf, then be hungry again.