Often referred to as the kitten season, warmer temperatures and longer hours of daylight lead many stray and un-desexed cats to roam the community, resulting in an abundance of kittens being born over summer.
SPCA Dunedin centre manager Ellen Andrews said it had 44 kittens at the centre from a "range of situations and circumstances".
"Because we’re in the middle of kitten season, the number of kittens we have can increase significantly in a single day."
On the "odd occasion" litters of kittens or puppies were left outside the centre, presumably from people unable to feed the extra mouths.
Almost 3000 kittens were in the care of SPCAs nationwide.
Ms Andrews strongly advised pet owners to desex their pets.
"Desexing is so important, and it’s the only way to reduce the number of unwanted or abandoned litters of kittens and puppies."
With the Dunedin Centre caring for double the amount of kittens this year, it was seeking anyone with some extra time who could volunteer as a foster carer.
"We are always seeking new foster homes for our animals, as it's a really crucial part of caring for these vulnerable animals.
"Being in a foster home allows sick and injured animals a safe, comfortable space to recover and prepare for adoption."
The Dunedin Centre was in particular need of foster volunteers for cat mums and their newborn kittens.
"Neonate fostering is very hands on, as the kittens require frequent bottle feeding and assistance to toilet."
Those interested were encouraged to apply online.
"Volunteering and fostering for SPCA are wonderful ways to help animals in need.
"We’re so appreciative of everyone who gives their time to help us."
