I completely agree with tohme! The average protein % of a raw diet is around 30-35%,this is what dogs are meant to thrive on.
In your post you mentioned pedigree,royal canin,mixers and lydog.I wouldnt feed any of them,as each has questionable ingredients which would be much more likely to be detrimental to a dog than the protein levels,and from what i remember pedigree's levels are rather on the low side,and royal canin achieves their high levels through corn gluten meal and not meat. Look at the sources of the protein first, before blaming it ;)
FTR one of the foods in my dogs rotation is 36% protein,all derived from meat(grain free).Myself and the countless others who i know who feed this food have had no problems with so called hyperactivity.
>have these been verified by a vet or a behaviourist or is she just a dog with too little mental or physical stimulation?
Ditto this question.