I have two Siamese that do great on this food. On others where they are not forced to chew they end up throwing it up whole later in the day. This not only nutritional but forces them to chew, helps clean their teeth and they never throw it up. Royal Canin produces the most nutritious cat food available according to my work mates at the University of California,Davis Veterinary Hospital and Veterinary department. 

yes, my 1 yr Siamese has been on this food since he was 7 months (he was throwing up alot with other foods) he loves this & all other Royal canin food too.He has had no problems with this food, My other 2 cats(not Siamese) also love this food

Hello, Yes, you can certainly use the Siamese for your Oriental Short Hair! Please let me know if you have further questions.

The keet nest is a hooded nest, canaries prefer an open nest. Only once in 27 years have I seen a canary use a hooded nest and that was out of desperation. I had a brother and sister canary in a large flight with many society finches that were sleeping in several parakeet bamboo hooded nests. I didn't have a canary nest in the cage because I didn't want a brother-sister pairing. It seems the canary hen crept into one of the keet nests and laid an egg there. The finches brooded the egg and I only discovered it when a dispute broke out between the mom canary and the resident finches after the baby had hatched. So the short answer is "No, canaries won't accept a covered parakeet nest."

I can't leave bowls of food for my 2 cats to "eat at will". One is fat and will eat hers and then anything else nearby, like her sister's food. I figured out just how much they should have each day and divided it by the number of meals ea. day (I feed them 4X, last one at night so they don't wake me up). For a 1/2 cup per day/per cat (recommended by Halo), I use a coffee scoop (a little more than a TBS) for each cat, for each meal. I also add a spoonful of pumpkin with lunch and then add a spoonful of Halo wet food at dinner. If one of my cats leaves anything in the dish, I try to remove it so the fat one doesn't get it. For your cat that eats too fast and then vomits: she may do better being fed more often - sometimes they get too hungry if they don't eat every 4 or 5 hrs. They metabolize their food very quickly. I've heard this from several vets. When I used to feed them less frequently, my fat one used to inhale her food, she's much better now and is slowly losing some weight. And they don't wake me up at 2 or 3 in the morning. You might also want to try to move her food dish (the one that eats too fast) away from the others - she may be afraid that others will take her food. It will not "hurt" any of your cats. This is healthy, well balanced food. If you read the label, you'll see there is nothing in it that you couldn't eat. BTW, the litter box will be noticeably "fresher". I'm on a tight budget, but still buy Halo. I want my cats to be around for a long time. Good luck.