Indra’s white elephant Airāvata and the wish-granting cow both rose from the churning of the ocean. In chapter 10 Kṛṣṇa names both: of elephants, Airāvata; of cows, Kāmadhuk.
The verses
BHAGAVAD GĪTĀ · 10.27उच्चैःश्रवसमश्वानां विद्धि माममृतोद्भवम्।
ऐरावतं गजेन्द्राणां नराणां च नराधिपम्।।
uccaiḥśravasam aśvānāṁ viddhi mām amṛtodbhavam
airāvataṁ gajendrāṇāṁ narāṇāṁ ca narādhipam
Of horses, know Me to be Uccaihsravas, the nectar-born. Of lordly elephants, I am Airavata, and of men, I am the monarch.
BHAGAVAD GĪTĀ · 10.28आयुधानामहं वज्रं धेनूनामस्मि कामधुक्।
प्रजनश्चास्मि कन्दर्पः सर्पाणामस्मि वासुकिः।।
āyudhānām ahaṁ vajraṁ dhenūnām asmi kāmadhuk
prajanaś cāsmi kandarpaḥ sarpāṇām asmi vāsukiḥ
Of weapons, I am the Vajra (thunderbolt); of cows, I am Kamadhuk; I am Kandarpa, the cause of progeny; of serpents, I am Vasuki.
Going deeper
Chapter 10 is the long list in which Kṛṣṇa names what he is, one best example at a time. 10.27 sits in the middle of it. Of horses, he says, know me as Uccaiḥśravas, born of nectar. Of lordly elephants he is Airāvata, and of men, the king. The verse before, 10.26, names the Aśvattha tree, Nārada among seers, Citraratha and Kapila. The verse after, 10.28, goes on with the thunderbolt among weapons, Kāmadhuk among cows, Kandarpa as the cause of offspring and Vāsuki among serpents. So the two creatures in this story sit one verse apart, in the same unbroken run. The list answers Arjuna's wish to hear the divine glories: wherever you see the best of anything, you are seeing a trace of him. The setting is in chapter 10, and what the Gītā says about devotion follows its themes.