How Many Birds And Other Wildlife Are Killed By Cats Calculator

We would prefer to call this calculator the "Why We Love Indoor Cats Calculator" because we love cats, but we also love wildlife. This calculator estimates the number of wildlife kills that occur both weekly and annually based on estimated cat populations using .the most current (hourly) US population estimate from the US Census. It then calculates the current number of households that are cat owners, the percentage of cats that are allowed outdoors, and the number of feral cats. The numbers change hourly because they are based on US human population estimates. If you want to use this calculator to get estimates for your region, find your population stats at the US Census , then enter your numbers here.

As of 02-23-2017 it is estimated that there are currently 316,158,692 people in the US, equaling 119,757,080 households.tooltip

36,406,152 of US households own a cat.tooltip

Number Of Owned Cats

There is an average of 2.1 cats per cat-owning household, totalling an estimated 76,452,920 cats currently in US households. 27,523,051 (36%) of owned cats are are allowed access to the outdoors.tooltip

Number Of Feral Cats

There are an estimated 5,987,854 - 76,452,920 feral cats in the UStooltip

Number Of Outdoor Cats

This totals 33,510,905 outdoor cats in the US. (*using the low end of the feral cat estimate)

Number Of Wildlife Kills

Recent research shows that one in 3 cats kills wildlife, at a rate of 2 kills per week. This means that 11,170,291 cats kill 22,340,581 wildlife per week, or 1,161,710,220 wildlife per year.tooltip

Of these kills, 27% are birds, 65% are mammals, and 8% are reptiles and amphibians. This means that
  • 313,661,759 birds are killed each year.
  • 755,111,643 mammals are killed each year.
  • 116,171,022 reptiles and amphibians are killed each year.tooltip

  • A cat's instinct to hunt is separate from its hunger drive. Seventy (70%), 813,197,154, of wildlife killed by cats are not eaten.tooltip

    The economic impact just from bird kills alone is estimated to be $9,409,852,781.tooltip