Mother's Day has spurred the SPCA to appeal to the human maternal instinct to find temporary mums for kittens.
Kitten season - the time of year when most kittens are born - begins in October, and the SPCA needs temporary homes for them until permanent homes are found.
"Mother's Day is drawing attention to the fact we have some beautiful animals for adoption," said SPCA executive director Bob Kerridge.
"I think we've got 200 kittens in foster care at any one point, and another 100 kittens waiting for recovery or adoption."
SPCA subsidises spaying and food for kittens while they are temporarily adopted.