Pick how it starts, then watch a neighbourhood play out on its own: kittens, mice, birds, gardens, and what the neighbours think. Our real cats are on the Live Map.
Year 1 · January
Cats 2Kittens born this year 0Mice and rats 0Small birds 0Cat poo so far 0 kgNeighbours’ complaints a month 0Gardens’ health 100out of 100: leaves eaten by insects, beds dug upYoung trees 0seeds birds carry in, minus those mice eat
Dashed line: the same start with nobody neutering.
Where the numbers come from
This is a model, not our real cats (those are on the Live Map). Every rate is taken from studies of real street cats, mice and birds. Where no study gives a number, we made a careful estimate and say so. It’s a model, so real neighbourhoods will differ, but the shape of what happens is the same.