Fallacies of Hitler's Mein Kampf

There are several fallacies in Hitler's Mein Kampf or "My Struggles".
"Each animal mates only with one of its own species." Here Hitler is using animal species as an analogy to the human race. He is pointing out that the species of animals only mate with their own kind. This aspect is true for the majority of the species but not to several animals such as the tigon or liger. But Hitler is not referring to the subspecies of humans (since there are none), he is trying to justify his opinion of differernt races. He is sayingt that since the majority of animals do not interbreed, we also should not mix our cultures either because of the differences in our skin complexions.
"The only difference that can exist within the species must be in the various degrees of structural strength and active power, in the intelligence, efficiency, endurance, etc., with which the individual specimens are endowed." Here, Hitler states that different species have their strength and intelligence thus referring to different races and their own measures. I presume he is trying to imply that all the other races are inferior to him and because their skin color determines theur intelligence, physical strength, and endurance. But this is only an opinion agreed by the majority of humans and Hitler here states one's skin color is the reason for their weakness.