Śrī Caitanya Caritamrta · Text Madhya 19.144
তার মধ্যে ‘স্থাবর’, ‘জঙ্গম’ — দুই ভেদ ।
জঙ্গমে তির্যক্-জল-স্থলচর-বিভেদ ॥ ১৪৪ ॥
tāra madhye ‘sthāvara’, ‘jaṅgama’ — dui bheda
jaṅgame tiryak-jala-sthalacara-vibheda
“The unlimited living entities can be divided into two divisions — those that can move and those that cannot move. Among living entities that can move, there are birds, aquatics and animals.
Read Śrīla Prabhupāda's purport on Vedabase.io