Australians love pet dogs and cats. But each year tens of thousands of them are killed. Often, they're perfectly healthy.

The RSPCA alone euthanased more than 56,000 cats and dogs last year. And that figure doesn't include all the animals put down at council pounds around Australia every day.

In this episode pet owners, breeders, pet shop owners, animal shelter workers and pets themselves join Jenny Brockie to look at why Australia is euthanasing so many dogs and cats. Insight will also ask whether pet owners are at fault for treating animals as a commodity, or whether there are just too many animals being bred in the first place.