Astanga Hrudaya
मध्यायुषो मध्यबलाः पण्डिताः क्लेशभीरवः। व्याघ्रर्क्षकपिमार्जारयक्षानूकाश्च पैत्तिकाः॥९५॥
Persons of pitta prakriti are of medium life-span, medium strength,, highly learned, afraid of discomfort and resemble (in behaviour) animals like the tiger, bear, ape, cat and yaksa
english translation