Animals unagitated, attain to happiness or misery, as an outcome of their actions performed (in their previous existence) by merits or demerits.
गुणदोषकृतं जन्तुः स्वकर्मफलहेतुकम्। अव्यग्रस्तदवाप्नोति सर्वं प्रेत्य शुभाशुभम्॥