Dutiyagaddulabaddhasutta 3.2

3.2

tepi kho, bhikkhave, tiracchānagatā pāṇā citteneva cittitā, tehipi kho, bhikkhave, tiracchānagatehi pāṇehi cittaññeva cittataraṃ.

The creatures in the animal realm were devised by the mind, but the mind is even more diverse than that.