"Australian blue heeler"? Is that anything like an Australian Shepard? The biggest cat I ever saw was my friends daughters pet. It had to weigh 30 pounds. It was huge. But luckily very gentle! I'm pretty sure it was a Maine Coon like Erlik mentioned. CD, are these feral cats recently "freed" cats or does their lineage go back a couple hundred years?

"Simplicity is the ultimate sophistication." Leonardo da Vinci