The Avestan word uštra-
Word uštra-
Meaning camel
See also Sanskrit: úṣṭra- ‘camel’

Other words that might be of interest
spa(n) ‘dog’, aspa ‘horse’, gauu- ‘cow, bull’, pasu ‘cattle, livestock’, vəhrka- ‘wolf’, sūn- ‘dog’, būza ‘male goat, goat’