INTELLIGENCE, POWER, 



to exhaustion employed by the dog family, theoretically, 

 one would expect to find in the cat family the organs of 

 outburst energy, that is, the adrenal glands, celiac ganglia, 

 and plexuses, relatively larger than the thyroid gland, the 

 organ of constant energy; and so we found it. 



Of great interest was the fact that among all the members 

 of the dog family, namely, the jackal, the coyote, the wolf, the 

 husky, with the sole exception of the greyhound, we found 

 the adrenal glands only slightly larger than the thyroid 

 gland. Among the fourteen dogs studied, whether in the 

 tropics or in the temperate zone, we found no domesticated 

 dog except the racing greyhound that possessed adrenal 

 glands strikingly larger than the thyroid gland. 



The greyhound, like the cat family, is set for outburst 

 energy. Like the thoroughbred horse, the greyhound has 

 been evolved as a sprinter. The racing greyhound and the 

 racing thoroughbred horse share honors in a record of speed 

 that is unique among all animals. 



Our thesis is beautifully illustrated by the fact that in the 

 greyhound the pattern of the energy system is that of the 

 cat family and the race horse. In other words, even among 

 members in the same species variation in the expression of 

 energy is accounted for by variation in the relative sizes of 

 the thyroid and adrenal glands, celiac ganglia, and plexuses. 



Keeping in mind that the emotion of fear is the integra- 

 tion of the organism to flight or fight and that the millions 

 of brain and nerve cells of the deer or antelope are instantly 

 flared in oxidation at the apprehension of the wolf or the 

 wild dog, that oxidation is augmented by adrenalin and 

 sympathin, that all the processes of the body that are not 

 needed in making the escape are completely inhibited, it 

 is easy to understand why a thumping heart, trembling 

 limbs, staring eyes, a raging metabolism comprise the state 

 of integration of these fleeing animals under the fear of the 

 pack. 



As the members of the cat family and the dog family 



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