My Dad lives in a small Australian country town, catches something like 50-70 cats in cat traps in his house and back yard each year and offloads them to the lo

My Dad lives in a small Australian country town, catches something like 50-70 cats in cat traps in his house and back yard each year and offloads them to the local pound. I can’t understand how cat owners are allowed to let their animals run all over town at all hours of the day and night. They cause so much damage to the native animals, wiping out frog and bird populations.