can anyone tell me how long it would take - or does anyone have any idea how soon you would expect it to take for behaviour to change if its partly food related??
i'll expand a little it may help :)
i have a teenage rott (18 months) who recently has been going through his 'teenage kevin' stage - mainly been having problems with his behaviour with other dogs
i was feeding him adren grange prestige as hes very slim + needs weight on to show him, i thought he was getting a little hyper generally so thought a change of food may help + have changed him onto royal canin rott diet - just a normal maintanace diet
well that was about 4 weeks ago and it seems my old dog has returned - his behaviour has gone back to being exactly how he was 'pre-teen'
i dont know if its coinsidence or if the behaviour could be partly food related
any ideas???
sorry long + rambling blog but cant think of simpler way to put everything :)

I would have said about a month for any changes to kick in.

At this sort of age it could be the food or it could be the change from adolescence to adulthood. Could try AG original or stick with the food you have changed to.

It is always said that high protein can cause over activity but would have thought in a 18 month puppy this would not be a problem as they are never still anyway.

thankyou

Rather an aside, but when I took my fox terrier to obedience our trainer seemed to "know" which mad, inattentive pups were on food that made them hyper. She would scold the owners... "you are feeding XX, which is full of colouring etc, and this is making him/her hyper..." or words to that effect. I was always astonished,  as the owners said that she was right when she guessed which food their puppies were on. I had (still have) a very bouncy, in-your-face, over-enthusiastic terrier, and I lived in fear of being told that she was on the wrong sort of food, but the trainer never said anything to me about the food, even when my dog was being the biggest pain in the (cl)ass.

Once we had managed to get through Puppy class and Bronze GC (for a first time dog owner with a terrier I felt quite good about that) I had the courage to ask her why she never called me out for having a bonkers dog on the wrong sort of additive-full food. She said - "but I knew she was only being a terrier puppy, and you were being a first-time owner"! She was right too. The dog was on Naturediet, no colourings etc in that! Most of her problems were mine really.

I still can't get over that she was able to spot the dogs bonkers on food additives, and the dogs that were just mad because that was their nature/the fault of their owners! But she did know!

We will one day go back and finish GC silver, but we will have to lose a few bad habits first! Me more so that the dog!

Claire

Before you change your food you must decide WHY you are changing it and what ingredient(s) etc are absent from one that are in the other one that you believe is changing behaviour.

There is no proven link between hyperactivity ( a much overused and abused term IME) and protein levels PER SE.  This is a complex issue little understood by most people.