The society received the lowest number of feral cats since records started in 2006 - and it may have something to do with the hot weather.

The number of domestic animals received and number of dogs euthanased were also down compared with the previous 12 months.

But the number of native animals received was up.

Almost 7500 animals came through the society's shelter in Weston in 2013, including 2511 native and 4679 domestic, as well as feral animals.

A total of 2090 cats came into its care during 2013, an 8 per cent reduction from the previous year. Of those, 364 cats were deemed to be feral, a record low number. The ACT government has declared 11 suburbs or areas to be cat containment zones which means cats must be confined to their premises 24-hours-a-day due to them presenting a serious nature conservation threat.

RSPCA acting chief executive officer Jane Gregor said she didn't believe that policy was a factor in fewer feral cats being received by the society. She said the feral cats were true wild animals rather than recently escaped domestic cats.

''The reduction could be because of the weather we've had. It's been hot over the last 12 months and that can certainly have an impact on the number of litters being born,'' she said. ''That's probably more of a reason than anything else.''

The society cared for 2511 native animals in its wildlife clinic, an

increase of 10.5 per cent from 2012. The most common reasons native species came to it were being hit by a car (14 per cent), disease (9 per cent), attack by another animal (9.5 per cent) and being orphaned (11 per cent).

Miss Gregor said the RSPCA saw almost 200 Australian King Parrots when in a usual year it received 20 or 30 of the native birds. She said they were affected by hexamita or spironucleosis, the symptoms of which include diarrhoea and wasting.

''Most of those were actually quite sick we had coming through the doors,'' she said.

Miss Gregor said the RSPCA discouraged the use of seed trays for native birds saying the birds defecated on them which helped spread disease.

''A lot of birds actually become reliant on them and that's not good either,'' she said.

There were 1775 dogs received during the year, 1024 of which were reclaimed by their owner.

Another 152 stray dogs were transferred to Domestic Animal Services. New homes were found for 389 dogs or puppies. Nine dogs died as a result of disease or injury at the time of entering the shelter. ''We took the difficult decision in 132 cases to euthanase the dog or puppy based on ongoing and irredeemable medical complications or injuries or irredeemable vicious or aggressive behaviour,'' a statement from the RSPCA said.

Miss Gregor said that was a reduction of about 10 per cent in dogs euthanased from the previous year. More than 500 kittens were placed in foster care. A total of 375 cats were euthanased due to medical or behaviour issues. She attributed a 12 per cent reduction in the number of domestic animals received to more responsible pet ownership, including having cats and dogs de-sexed.