The malformed head, lowset ears, large hooked nose and the other assorted deformations that afflict the jew are similar, but not exactly the same as one might observe due to interbreeding sometimes seen in other races. When we compare physiques of the Aryan to that of the jew we can easily see why they hate us. The jew has long known of their grotesque features and how other races shunned them for it.
And this is why, every fifth generation, and with a rabbi's blessing, it is permissable for a jew to breed outside their race. The periodic race mixing allows the jew to assimilate more readily into it's host nation and helps prevent the normally occurring grotesque jewish physical features from reaching monsterous proportions. We can only imagine the hideous beast that would be spawned by a line of jews that did not periodically infuse it's bloodline with human DNA.