For Kunthunath Bhagwan, the goat (bakaro) is given as lāñchan (symbol) mainly for its guna (qualities) that match his spiritual personality.

In Jain tradition:

• The goat stands for saralta (simplicity) and vinamratā (humility).
• It also reflects dhairyata (patience) and sahanshakti (capacity to endure).
• As Tirthankars are vitarāg (completely free from anger, pride, deceit, greed), this simple, non‑aggressive animal is taken as the recognition mark of Kunthunath Bhagwan on idols and in scriptures.

Our scriptures mainly state the symbol, not a long story like “this happened, so goat was chosen.” Acharyas explain that all Tirthankar lāñchans are fixed by Kevaljnani Bhagwants and carried forward in the Jain tradition. For Kunthunath Bhagwan, that decided emblem is the goat, remembered as a sign of his simple, humble and patient nature.

You can read a short note about Kunthunath Bhagwan and his symbol here and a general list of Tirthankars and their symbols here