>I have been trying out a 100% raw organic,high-fat-high-protein(80% of
diet)
 >version of the Primal Diet but without any raw dairy. As I am trying to
 >increase my muscular strength, I feel it's necessary.


maybe, but I've not seen any evidence that eating high fat high protein
aids in acquiring muscular strength.



 >However, given that Palaeolithic peoples ate raw
 >animal protein and fat for as at least 65% of their diet, and often much
 >more, I would recommend increasing your raw-protein intake, just in case.

this is a wild generalization from limited data over SPACE and TIME.


 >As far as babies go, they don't have as much muscles and bone in
proportion
 >to body weight as, say, (male) teenagers or adults, so I think one
ought to
 >increase one's protein intake as one gets older.

a baby's huge growth makes their relative protein needs per bodyweight
HIGHER than adults, not less.  muscles are not supported by large amt of
protein
intake as there is very little turnover on a regular basis for an adult.