Roslina Roslani, 34, together with other drug-related charges, was sentenced to a total of five years, six months and four weeks' jail on Monday, Channel News Asia reported.
She could have been sentenced to up to 18 months in jail and fined a maximum of 15,000 Singapore dollar (USD 10,783) if convicted of animal cruelty.
The case came to light after the Agri-Food and Veterinary Authority of Singapore (AVA) inspected her apartment in the Yishun housing estate on February 25, following public feedback about animal faecal odour coming from her unit.
The remaining 34 cats were released to the Cat Welfare Society (CWS) for rehoming.
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CWS, which helped care the cats before they found new homes, had spent nearly 40,000 Singapore dollar (USD 28,757) on their medical and boarding fees.
"We can really attest to the suffering and trauma of the cats that were rescued from this hoarder," CWS committee member Veron Lau was quoted as saying.
Nine of the cats are currently living with fosterers who are likely to adopt them and 18 will be up for adoption as part of the Fur Friends Fiesta carnival at the HomeTeamNS Sembawang Clubhouse on November 26.
"We urge cat owners who are breeding and have not sterilised their cats to do so to avoid a situation when cat keeping spirals out of control to the detriment of everyone - cats, owner and community," Lau said.
If convicted of animal cruelty, first-time offenders are liable to a maximum fine of 15,000 dollar and up to 18 months in jail.