SPCA Otago business development manager Kirsty Thomson, of Dunedin, said three kittens were dumped at the shelter gate in a ''taped up'' cardboard box on Tuesday.
''That is what we are up against at the moment.''
American bulldog-cross puppy Ruby, who was part of a litter dumped at the gate in August, was still available for adoption.
''She's a lovely wee pup.''
Lately inspectors had been responding to reports of abandoned ''flat cats from studentville''.
''It's a shame they are seen as temporary pets - it's never right.''
The people reporting the cats being abandoned were mostly landlords or neighbours.
The cats often needed vaccinations and desexing but were usually well socialised.
''They've been to a few parties.''
Collie-cross puppy Cookie was taken to the shelter by the flatmates of the dog's owner, who had moved out and left Cookie behind.
Cookie was not desexed, registered or microchipped, and there was no evidence of vaccination or other health treatment.
''Nevertheless, Cookie is a healthy, happy dog and very willing to please everyone.''
As of yesterday, the Dunedin shelter housed 114 animals, mostly cats and kittens.
The animals which were unwanted Christmas presents had not started coming to the shelter yet, Ms Thomson said.
''There's always some.''
People should give an SPCA gift voucher allowing the recipient to receive a pet from the shelter rather than adopting an animal to give to the person.
''It's a much better way of doing it. Then the person is involved and they feel more committed to an animal they have been able to choose.''
