Srimad Bhagavatam Canto 04, Chapter 13, Text 41

SB 4.13.41

akride kridato balan
vayasyan atidarunah
prasahya niranukrosah
pasu-maram amarayat
 
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada: 
 
The boy was so cruel that while playing with young boys of his age he would kill them very mercilessly, as if they were animals meant for slaughter.
 
Srimad Bhagavatam Canto 04, Chapter 13, Text 40
Srimad Bhagavatam Canto 04, Chapter 13, Text 42