«One school of thought is that implementing broad scale fox control allowed these native species to build up in numbers, which then allowed better survival of the cat population and then they became a threat.» (abc.net.au)
Predation on woylies by cats was greater than previously recognised and, by implication, may significantly reduce the effectiveness of fox control programs throughout Australia. (publish.csiro.au)
In 1970 the responsibility for fox control passed to the London boroughs, and many in south and west London started trapping and shooting foxes, and gassing their dens with cyanide. (newscientist.com)