. . . More birds and mammals die at the paws of cats than are killed by cars, chemicals or collisions with man-made structures

. . . felines typically spent one third of every day killing small animals.

The Independent UK

Cats are one of the top threats to US wildlife, killing billions of animals each year, a study suggests.

The authors estimate they are responsible for the deaths of between 1.4 and 3.7 billion birds and 6.9-20.7 billion mammals annually.
. . . and feral cats were the worst offenders.
. . . pet cats also played a role and that owners should do more to reduce their impact.
. . . more animals are dying at the claws of cats in the United States than in road accidents, collisions with buildings or poisonings.

The domestic cat's killer instinct has been well documented on many islands around the world. Felines accompanying their human companions have gone on to prey on the local wildlife, and they have been blamed for the global extinction of 33 species.

https://www.bbc.co.uk/news/science-environment-21236690