Domestic cats as a species had been introduced to America by humans, and still are explicitly kept and feed by humans. I'd call that breeding. This also sets an easy and natural metric of how many cats should be there: 0.
0 karma · joined June 5, 2023
From https://www.nature.com/articles/ncomms2380
"Our findings suggest that free-ranging cats cause substantially greater wildlife mortality than previously thought and are likely the single greatest source of anthropogenic mortality for US birds and mammals."