The situation in australia is very different from other regions, in a previous discussion on HN we've already established that for central europe, domestic cats have a negligible effect on wildlife. (As in, orders of magnitudes below the next higher causes, which are mostly wild cats and pesticides).

> As in, orders of magnitudes below the next higher causes, which are mostly wild cats and pesticides

I'm not sure if you're aware, wild cats are a direct result of domestic cats.

Perhaps they meant European wildcats[1], not feral cats. [1] https://en.wikipedia.org/wiki/European_wildcat

This is backward, the domestic cat is a descendent of the Eurasian wildcats.

A substantial number of the wild cats in Europe are feral, but so what. Same cat, same niche, same place.

And i'm sure mining for coal, building ever expanding suburbs or driving cars doesn't contribute to killing any bird or mammal.. I'd need the figures but i'm convinced that human activities are far more dangerous for other animals than the activities of our pets.

And how big part of the population is that? I can’t say if that is a big or a small number without knowing the total population.