One verse

Srimad Bhagavatam 10.12.22

10.12.22

आस्तृतायाममार्गोऽयं रसनां प्रतिगर्जति । एषामन्तर्गतं ध्वान्तमेतदप्यन्तराननम् ॥ २२ ॥

āstṛtāyāma-mārgo ’yaṁ rasanāṁ pratigarjati eṣāṁ antar-gataṁ dhvāntam etad apy antar-ānanam

āstṛta-āyāma
the length and breadth
mārgaḥ ayam
a broad way
rasanām
the tongue
pratigarjati
resembles
eṣām antaḥ-gatam
on the inside of the mountains
dhvāntam
darkness
etat
this
api
indeed
antaḥ-ānanam
the inside of the mouth

In length and breadth the animal’s tongue resembles a broad traffic-way, and the inside of its mouth is very, very dark, like a cave in a mountain.