Ancient Science

चत्वारि वाक्परिमिता पदानि तानि विदुर्ब्राह्मणा ये मनीषिणः ।गुहा त्रीणि निहिता नेङ्गयन्ति तुरीयं वाचो मनुष्या वदन्ति ॥ catvari vak parimita padani tani vidurbrahmana ye manisinahguha trini

There are some creatures of mild (poison) while others of strong venom. Some are aquatic (living in water), some reptiles snakes and some are insects,