We had a prolific rabbit hunter (cat) living here10 years ago. I would be working or sitting in the garden and hear a loud plop many times a day as it returned with yet another rabbit. There would then be loud crunching noises as it started to devour its prey. Trouble is, it would never finish one before going off to catch another. Every evening, I was having to clear my garden of the remains, and if i missed any the smell was horrendous by the next day. (Sorry if I am putting anyone off their dinner!) That said, the rabbit population was so bad at that time that it didn't make any noticeable difference to their numbers.
The same cat wasn't content with rabbits, and attacked me more than once when I was quietly working away in the garden - i would be rooting out weeds then suddenly the cat would fly through the air out of nowhere and sink its teeth in my hand. I think it's safe to say that the dislike was mutual! Fortunately, my neighbours's cat, although just as prolific a hunter, is a much more pleasant creature!