SB 10.13.31
sametya gavo ’dho vatsan
vatsavatyo ’py apayayan
gilantya iva cangani
lihantyah svaudhasam payah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The cows had given birth to new calves, but while coming down from Govardhana Hill, the cows, because of increased affection for the older calves, allowed the older calves to drink milk from their milk bags and then began licking the calves’ bodies in anxiety, as if wanting to swallow them.