Wayne Evans, 59, of Llandysul, was found with indecent images of children as young as four after the National Crime Agency flagged his online activity to Dyfed-Powys Police.
Jack Ryan, 22, from Barry, used burner phones to send bulk messages advertising cocaine before police raided his home.
James Badham, 34, kicked down his Rhymney neighbour's front door and attacked him with a lock knife following a dispute over a parking space.
Prasad Saravanan, 24, of Swansea, was jailed for 31 months at Swansea Crown Court after pleading guilty to sexual grooming offences against a 13-year-old girl.
Nia Purnell, 34, was ordered to pay hundreds in fines and costs after being caught without a valid TV licence.
Danielle Jenkins, 34, has been banned from keeping cats for five years after seven were found living in faeces-coated conditions in Abersychan.
Christian Morse, 52, breached his sex offenders' register requirements and sexual harm prevention order over an 18-month period.
Conor Abraham, 27, kicked, slapped, and spat in his mother's face before throwing a footstool at her during an attack at her Swansea home.
Macauley Webb, 29, from Newport, was caught with indecent images of children just weeks after being released early from an eight-year prison sentence for previous child sex offences.
Salem Khan, 21, was sentenced to 2,045 days after admitting drug supply charges for a third time.
Cailum Hill, 22, was sentenced to 27 months at Merthyr Tydfil Crown Court after being convicted of intentional strangulation and criminal damage.
Alan and Bernita Davies, both 60, from Pandy near Wrexham, have each been sentenced to eight years in prison at Mold Crown Court after admitting causing or allowing the death of their daughter Steffie, 32.