There is no such law to make tail docking illegal in Malaysia, most breeders do it on their own rather than bringing to vet. As for which vet does it, perhaps you can try calling them up.

1 year old would be considered as adult.

All dogs are different, the % is just a guideline. I know dogs of same size and breed that are fed with the same amount but one is fat but the other is skinny.

At the end of the day, owner knows best. Try feeding a certain amount you find comfortable with for 2 weeks. Observe. If you find your dog too skinny, increase the amount and observe again. Reduce if otherwise. After some time, you will know the best amount to feed.

Try calling up MKA for some poodle breeders' contacts.

Alternatively, you can visit MKA organised dog shows, chances are you would be able to be in touch with reputable breeders.

Well it is definitely difficult to determine whether your dog is allergic to salmon but you can start by trying to change the range of dog food to see whether it helps.

Personally, my concern is not the level of protein, more of the ingredient of the dog food itself.

Ignore whatever is written in the front of the packaging, flip backwards, look at the ingredients, and google more about what it means especially the first 2 ingredients.

If gaining weight is a concern, you can either exercise your dog more or adjust the feeding amount accordingly.